Find the radius and perimeter of a semi-circle whose area is : $12.32 m^2$
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Perimeter & Area of Plane Figures question types
133 questions across 6 question groups — pick any mix to generate a MATHS paper with step-by-step answer keys.
133
Questions
6
Question groups
5
Question types
01
[1 Mark Question Answer]
39 Q→02[2 Mark Question Answer]
34 Q→03[3 marks sum]
10 Q→04[4 marks sum]
2 Q→05fill in the blanks.
6 Q→06MCQ
42 Q→Sample Questions
Perimeter & Area of Plane Figures questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Find the radius and perimeter of a semi-circle whose area is : $77 cm^2$
View full solution →Find the area of a semi-circle whose perimeter is : 144 cm
Find the area of a semi-circle whose perimeter is : 54 cm
Taking $\pi=3.14$, find the perimeter and area of a semi-circle whose radius is : 20 cm
View full solution →The shape of a park is a rectangle bounded by semicircles at the ends, each of radius 17.5 m, as shown in the adjoining figure. Find the area and the perimeter of the park.
A wire when bent in the form of a square encloses an area of $756.25 cm^2$. If the same wire is bent to form a semi-circle, what will be the radius of the semi-circle so formed?
View full solution →A wire is in the form of a square of side 49.5 cm. It is straightened and bent into a semicircle. What is the radius of the semi-circle so formed?
A wire is in the form of a semi-circle of radius 28 cm. It is straightened and bent into the form of a square. What is the length of the side of the square?
Find the area of the shaded region in the figure :
Find the area of the shaded region in the following figure:
Find the perimeter and area of the adjoining figure, it being given that $AB \| CD , AB =12 cm, CD =15 cm$, $BD =4 cm$ and one end of the figure is a semi-circle with BD as diameter. (Take $\pi=3.14$.)
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Find the area of an octagon ABCDEFGH having each side equal to $5 cm, HC =11 cm$ and $AP \perp HC$ such that $AP =4 cm$.
View full solution →Find the area of pentagon PQRST in which $QD \perp PR , RE \perp PS$ and $TF \perp PS$ such that $PR =10 cm, PS =12 cm, QD =3 cm$, $RE =7 cm$ and $TF =5 cm$.
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The ratio of the lengths and breadth of a rectangle is $3: 2$ and its area is $96 cm^2$. Then its length is __________
View full solution →If the perimeter and area of a square are numerically equal then, the length of its side is __________
The area of a rhombus is half the product of its __________
1 hectare $=$ __________ $m ^2$
View full solution →$5000 cm^2=$ __________ $dm ^2$
View full solution →A rectangle has 15 cm as its length and $150 cm^2$ as its area. Its area is increased to $1 \frac{1}{3}$ times the original area by increasing only its length. Its new perimeter is
- A50 cm
- ✓60 cm
- C70 cm
- D80 cm
Answer: B.
View full solution →A 5 m wide lawn is cultivated all along the outside of a rectangular plot measuring 90 m $\times$ 40 m. The total area of the lawn is
- A$1200 m^2$
- B$1300 m^2$
- C$1350 m^2$
- ✓$1400 m^2$
Answer: D.
View full solution →A rectangular lawn 60 metres by 40 metres has two roads each 5 metres wide running in the middle of it, one parallel to length and the other parallel to breadth. The cost of gravelling the roads at ₹ 60 per sq metre is
- A₹ 25000
- B₹ 28000
- ✓₹ 28500
- D₹ 30000
Answer: C.
View full solution →A hall 40 m long and 15 m broad is to be paved with stones, each measuring 6 dm by 5 dm. The number of stones required is
- A1000
- ✓2000
- C2500
- D3000
Answer: B.
View full solution →Around a rectangular garden of length $10 m$ and width $5 m$, a road $1 m$ wide is laid. The cost of cementing the road at ₹ 200 per $m ^2$ is
- A₹ 3400
- B₹ 6000
- ✓₹ 6800
- D₹ 13200
Answer: C.
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