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Maths M.C.Q. [1 Marks Each]

Perimeter and Area · Jharkhand Board (JAC) STD 7 (Jharkhand - English Medium). 33 questions.

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M.C.Q. [1 Marks Each]

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33 questions · auto-graded multiple-choice test.

MCQ 11 Mark
The diameter of a circle is $7 \mathrm{~cm}$. Find its area
  • A
    $154 \mathrm{~cm}^{2}$
  • ✓
    $38.5 \mathrm{~cm}^{2}$
  • C
    $22 \mathrm{~cm}^{2}$
  • D
    $11 \mathrm{~cm}^{2}$
Answer
Correct option: B.
$38.5 \mathrm{~cm}^{2}$
b
Area $=\frac{22}{7} \times \frac{7}{2} \times \frac{7}{2}=38.5 \mathrm{~cm}^{2}$
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MCQ 21 Mark
The radius of a circle is $7 \mathrm{~cm}$. Find its area
  • ✓
    $154 \mathrm{~cm}^{2}$
  • B
    $77 \mathrm{~cm}^{2}$
  • C
    $11 \mathrm{~cm}^{2}$
  • D
    $22 \mathrm{~cm}^{2}$
Answer
Correct option: A.
$154 \mathrm{~cm}^{2}$
a
Area $=\frac{22}{7} \times 7 \times 7=154 \mathrm{~cm}^{2}$
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MCQ 31 Mark
The diameter of a circle is $14 \ cm$. Find its circumference
  • ✓
    $44 \ cm$
  • B
    $22 \ cm$
  • C
    $11 \ cm$
  • D
    $55 \ cm$
Answer
Correct option: A.
$44 \ cm$
Circumference $=\frac{22}{7} \times 14=44 \mathrm{~cm}$
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MCQ 41 Mark
The radius of a circle is $7 \ cm$. Its circumference is
  • A
    $22 \ cm$
  • ✓
    $44 \ cm$
  • C
    $11 \ cm$
  • D
    $66\ cm$
Answer
Correct option: B.
$44 \ cm$
Circumference $=2 \times \frac{22}{7} \times 7=44 \mathrm{~cm}$
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MCQ 51 Mark
Which of the following is not the value of $\pi$ ?
  • A
    $\frac{22}{7}$
  • ✓
    $A$ is False and $R$ is the correct explanation of $A$
  • C
    $\frac{355}{113}$
  • D
    $3.14$
Answer
Correct option: B.
$A$ is False and $R$ is the correct explanation of $A$
$A$ is False and $R$ is the correct explanation of $A$
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MCQ 61 Mark
The area of a parallelogram is $20 \ cm \ 2$ and height is $2 \ cm$. Find the corresponding base.
  • A
    $3 \ cm$
  • B
    $4 \ cm$
  • C
    $5 \ cm$
  • ✓
    $2.4 \ cm$
Answer
Correct option: D.
$2.4 \ cm$
Base $=\frac{20}{2}=10 \mathrm{~cm}$
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MCQ 71 Mark
If the area of a parallelogram is $16 \ cm\ 2$ and base is $8 \ cm$, find the height.
  • A
    $1 \ cm$
  • ✓
    $2 \ cm$
  • C
    $3 \ cm$
  • D
    $4 \ cm$
Answer
Correct option: B.
$2 \ cm$
Height $=\frac{16}{8}=2 \mathrm{~cm}$
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MCQ 81 Mark
One of the sides and the corresponding height of a parallelogram are $3 \mathrm{~cm}$ and $1 \mathrm{~cm}$ respectively. The area of the parallelogram is
  • A
    $1 \mathrm{~cm}^{2}$
  • ✓
    $3 \mathrm{~cm}^{2}$
  • C
    $6 \mathrm{~cm}^{2}$
  • D
    $12 \mathrm{~cm}^{2}$
Answer
Correct option: B.
$3 \mathrm{~cm}^{2}$
b
Area $=3 \times 1=3 \mathrm{~cm}^{2}$
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MCQ 91 Mark
The area of the parallelogram $\mathrm{ABCD}$ in which $\mathrm{AB}=6.2 \mathrm{~cm}$ and the perpendicular from $\mathrm{C}$ on $\mathrm{AB}$is $5 \mathrm{~cm}$ is
  • A
    $30 \mathrm{~cm}^{2}$
  • B
    $29 \mathrm{~cm}^{2}$
  • C
    $28 \mathrm{~cm}^{2}$
  • ✓
    $31 \mathrm{~cm}^{2}$
Answer
Correct option: D.
$31 \mathrm{~cm}^{2}$
d
Area $=6.2 \times 5=31 \mathrm{~cm}^{2}$
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MCQ 101 Mark
The area of a parallelogram of base $5 \mathrm{~cm}$ and height $3.2 \mathrm{~cm}$ is
  • A
    $8 \mathrm{~cm}^{2}$
  • B
    $12 \mathrm{~cm}^{2}$
  • ✓
    $16 \mathrm{~cm}^{2}$
  • D
    $20 \mathrm{~cm}^{2}$
Answer
Correct option: C.
$16 \mathrm{~cm}^{2}$
c
Area $=5 \times 3.2=16 \mathrm{~cm}^{2}$
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MCQ 111 Mark
A rectangular wire of length $40 \ cm$ and breadth $20 \ cm$ is bent in the shape of a square. The side of the square is
  • A
    $10 \ cm$
  • B
    $20 \ cm$
  • ✓
    $30 \ cm$
  • D
    $40 \ cm$
Answer
Correct option: C.
$30 \ cm$
Side of square $=\frac{2(40+20)}{4}=30 \mathrm{~cm}$
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MCQ 121 Mark
The area of a rectangular room is $150 \mathrm{~m}^{2}$. If its breadth is $10 \mathrm{~m}$, then find its length.
  • ✓
    $15 \mathrm{~m}$
  • B
    $25 \mathrm{~m}$
  • C
    $50 \mathrm{~m}$
  • D
    $55 \mathrm{~m}$
Answer
Correct option: A.
$15 \mathrm{~m}$
a
Length $=\frac{150}{10}=15 \mathrm{~m}$
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MCQ 131 Mark
The perimeter of a square is $48 \ cm$. Its area is
  • ✓
    $144 \mathrm{~cm}^{2}$
  • B
    $12 \mathrm{~cm}^{2}$
  • C
    $48 \mathrm{~cm}^{2}$
  • D
    $100 \mathrm{~cm}^{2}$
Answer
Correct option: A.
$144 \mathrm{~cm}^{2}$
Side $=\frac{48}{4}=12 \mathrm{~cm}$
$\therefore$ Area $=12 \times 12=144 \mathrm{~cm}^{2}$
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MCQ 141 Mark
The perimeter of a rectangle is $30 m$. Its length is $10 m.$ Its breadth is
  • ✓
    $5 \ m$
  • B
    $10 \ m$
  • C
    $15 \ m$
  • D
    $3 \ m$
Answer
Correct option: A.
$5 \ m$
$30=2($ Length $+$ Breadth $)$
$\Rightarrow 30=2(10+$ Breadth $)$
$\Rightarrow$ Breadth $=5 \mathrm{~m}$
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MCQ 151 Mark
The area of a rectangular field is $250 \mathrm{~m}^{2}$. If the breadth of the field is $10 \mathrm{~m}$, find its length.
  • ✓
    $25 \mathrm{~m}$
  • B
    $50 \mathrm{~m}$
  • C
    $100 \mathrm{~m}$
  • D
    $125 \mathrm{~m}$
Answer
Correct option: A.
$25 \mathrm{~m}$
a
Length $=\frac{250}{10}=25 \mathrm{~m}$
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MCQ 161 Mark
The area of a square is $625 \mathrm{~m}^{2}$. Find its side
  • ✓
    $25 \mathrm{~m}$
  • B
    $50 \mathrm{~m}$
  • C
    $125 \mathrm{~m}$
  • D
    $5 \mathrm{~m}$
Answer
Correct option: A.
$25 \mathrm{~m}$
a
Side $=\sqrt{625}=25 \mathrm{~m}$
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MCQ 171 Mark
The area of a square is $121 \mathrm{~m}^{2}$. Its side is
  • ✓
    $11 \mathrm{~m}$
  • B
    $21 \mathrm{~m}$
  • C
    $31 \mathrm{~m}$
  • D
    $41 \mathrm{~m}$
Answer
Correct option: A.
$11 \mathrm{~m}$
a
Side $=\sqrt{121}=11 \mathrm{~m}$
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MCQ 181 Mark
The area of a square plot is $1600 \mathrm{~m}^{2}$. The side of the plot is
  • ✓
    $40 \mathrm{~m}$
  • B
    $80 \mathrm{~m}$
  • C
    $120 \mathrm{~m}$
  • D
    $160 \mathrm{~m}$
Answer
Correct option: A.
$40 \mathrm{~m}$
a
Side $=\sqrt{1600}=40 \mathrm{~m}$
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MCQ 191 Mark
$1$ are $=$
  • A
    $10 \mathrm{~m}^{2}$
  • ✓
    $100 \mathrm{~m}^{2}$
  • C
    $1000 \mathrm{~m}^{2}$
  • D
    $10000 \mathrm{~m}^{2}$
Answer
Correct option: B.
$100 \mathrm{~m}^{2}$
$100 \mathrm{~m}^{2}$
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MCQ 201 Mark
$1$ hectare $=$
  • A
    $10 \mathrm{~m}^{2}$
  • B
    $100 \mathrm{~m}^{2}$
  • C
    $1000 \mathrm{~m}^{2}$
  • ✓
    $10000 \mathrm{~m}^{2}$
Answer
Correct option: D.
$10000 \mathrm{~m}^{2}$
$10000 \mathrm{~m}^{2}$
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MCQ 211 Mark
$1 \mathrm{~m}^{2}=$
  • A
    $10 \mathrm{~cm}^{2}$
  • B
    $100 \mathrm{~cm}^{2}$
  • C
    $1000 \mathrm{~cm}^{2}$
  • ✓
    $10000 \mathrm{~cm}^{2}$
Answer
Correct option: D.
$10000 \mathrm{~cm}^{2}$
$10000 \mathrm{~cm}^{2}$
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MCQ 221 Mark
$1 \mathrm{~cm}^{2}=$
  • A
    $10 \mathrm{~mm}^{2}$
  • ✓
    $100 \mathrm{~mm}^{2}$
  • C
    $1000 \mathrm{~mm}^{2}$
  • D
    $10000 \mathrm{~mm}^{2}$
Answer
Correct option: B.
$100 \mathrm{~mm}^{2}$
$100 \mathrm{~mm}^{2}$
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MCQ 231 Mark
The area of a circle of diameter d is
  • A
    $\pi \mathrm{d}^{2}$
  • B
    $2 \pi d^{2}$
  • ✓
    $\frac{1}{4} \pi d^{2}$
  • D
    $2 \pi d$
Answer
Correct option: C.
$\frac{1}{4} \pi d^{2}$
$\frac{1}{4} \pi d^{2}$
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MCQ 241 Mark
The area of a circle of radius $\mathrm{r}$ is
  • ✓
    $\pi r^{2}$
  • B
    $2 \pi r^{2}$
  • C
    $2 \pi r$
  • D
    $4 \pi r^{2}$
Answer
Correct option: A.
$\pi r^{2}$
a
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MCQ 251 Mark
If $\mathrm{r}$ and $\mathrm{d}$ are the radius and diameter of a circle respectively, then
  • ✓
    $\mathrm{d}=2 \mathrm{r}$
  • B
    $\mathrm{d}=\mathrm{r}$
  • C
    $\mathrm{d}=\frac{1}{2} \mathrm{r}$
  • D
    $d=r^{2}$
Answer
Correct option: A.
$\mathrm{d}=2 \mathrm{r}$
a
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MCQ 261 Mark
The circumference of a circle of diameter $d$ is
  • ✓
    $\pi d$
  • B
    $2\pi d$
  • C
    $\frac{1}{2} \pi d$
  • D
    $\pi d^{2}$
Answer
Correct option: A.
$\pi d$
$\pi d$
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MCQ 271 Mark
The circumference of a circle of radius $r$ is
  • A
    $\pi r$
  • ✓
    $2 \pi r$
  • C
    $\mathrm{rr}^{2}$
  • D
    $\frac{1}{4} \pi r^{2}$
Answer
Correct option: B.
$2 \pi r$
$2 \pi r$
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MCQ 281 Mark
Area of a triangle =
  • A
    base $\times$ height
  • ✓
    $\frac{1}{2} \times$ base $\times$ height
  • C
    $\frac{1}{3} \times$ base $\times$ height
  • D
    $\frac{1}{4} \times$ base $\times$ height
Answer
Correct option: B.
$\frac{1}{2} \times$ base $\times$ height
$\frac{1}{2} \times$ base $\times$ height
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MCQ 291 Mark
Area of a parallelogram $=$
  • ✓
    base $\times$ height
  • B
    $\frac{1}{2} \times$ base $\times$ height
  • C
    $\frac{1}{3} \times$ base $\times$ height
  • D
    $\frac{1}{4} \times$ base $\times$ height
Answer
Correct option: A.
base $\times$ height
base $\times$ height
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MCQ 301 Mark
Area of a rectangle of length $l$ and breadth $b$ is
  • ✓
    $l \times b$
  • B
    $l + b$
  • C
    $2 \times (l + b)$
  • D
    $6 \times (l + b)$
Answer
Correct option: A.
$l \times b$
$l \times b$
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MCQ 311 Mark
Area of a square $=$
  • ✓
    side $\times $ side
  • B
    $2 \times $ side
  • C
    $3 \times $ side
  • D
    $4 \times $ side
Answer
Correct option: A.
side $\times $ side
side $\times $ side
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MCQ 321 Mark
Perimeter of a rectangle of length $Z$ and breadth $6$ is
  • A
    $l + b$
  • ✓
    $2 \times (l + b)$
  • C
    $3 \times (l + b)$
  • D
    $l \times b$
Answer
Correct option: B.
$2 \times (l + b)$
$2 \times (l + b)$
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MCQ 331 Mark
Perimeter of a square =
  • A
    side $\times $ side
  • B
    $3 \times $ side
  • ✓
    $4 \times $ side
  • D
    $2 \times $ side
Answer
Correct option: C.
$4 \times $ side
$4 \times $ side
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