The ratio of the area and circumference of a circle of diameter $d$ is:
- A$\text{d}$
- B$\frac{\text{d}}{2}$
- ✓$\frac{\text{d}}{4}$
- D$2\text{d}$
Answer: C.
View full solution →Question types
Mensuration – II (Area of Circle) question types
72 questions across 4 question groups — pick any mix to generate a Maths paper with step-by-step answer keys.
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Sample Questions
Mensuration – II (Area of Circle) questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The ratio of the perimeter (circumference) and diameter of a circle is:
- ✓$\pi$
- B$2\pi$
- C$\frac{\pi}{2}$
- D$\frac{\pi}{4}$
Answer: A.
View full solution →A circle is inscribed in a square of side $14m.$ The ratio of the area of the circle and that of the square is:
- A$\pi:3$
- ✓$\pi:4$
- C$\pi:2$
- D$\pi:1$
Answer: B.
View full solution →The circumferences of two circles are in the ratio $3 : 4.$ The ratio of their areas is:
- A$3 : 4$
- B$4 : 3$
- ✓$9 : 16$
- D$16 : 9$
Answer: C.
View full solution →The areas of two circles are in the ratio $49 : 36.$ The ratio of their circumferences is:
- ✓$7 : 6$
- B$6 : 7$
- C$3 : 2$
- D$2 : 3$
Answer: A.
View full solution →Find the radius of a circle whose circumference is: $6.6\ km.$
View full solution →Find the area of a circle whose radius is:
$2.1\ m.$
View full solution →$2.1\ m.$
A water sprinkler in a lawn sprays water as far as $7m$ in all directions. Find the length of the outer edge of wet grass.
View full solution →Find the circumference of a circle whose diameter is:$7\ cm.$
View full solution →Find the area of a circle whose diameter is: $5.6\ m.$
View full solution →A well of diameter $150\ cm$ has a stone parapet around it. If the length of the outer edge of the parapet is $660\ cm$, then find the width of the parapet.
View full solution →The radius of one circluar field is $20m$ and that of another is $48m$. Find the radius of the third circular field whose area is equal to the sum of the areas of two fields.
View full solution →The hour and minute hands of a clock are $4\ cm$ and $6\ cm$ long respectively. Find the sum of the distances travelled by their tips in $2$ days.
View full solution →The area of circle is $100$ times the area of another circle. What is the ratio of their circumferences?
View full solution →Four equal circles, each of radius $5\ cm$, touch each other as shown in Fig. Find the area included between them. (Take $\pi = 3.14).$
View full solution →The diameter of a wheel of a car is $98\ cm$. How many revolutions will it make to travel $6160$ metres.
View full solution →A wire in the form of a rectangle $18.7\ cm$ long and $14.3\ cm$ wide is reshaped and bent into the form of a circle. Find the radius of the circle so formed.
View full solution →The ratio of the radii of two circles is $3 : 2$. What is the ratio of their circumferences?
View full solution →If the area of a circle is $50.24m^2$, find its circumference.
View full solution →The perimeter of a circle is $4\pi\text{r cm}.$ What is the area of the circle?
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