Area of a Circle
Trending Questions

- 220
- 440
- 100
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If the radius of the circle is R. Find the area of the circle.
38.5 cm2
42 cm2
30 cm2
35 cm2
Radius of a circle is doubled. What will be the ratio of areas of the new circle to the area of the given circle?
4:8
2:3
4:1
5:3
What is the area of a circle with radius r units?
2πr2
4πr2
πr2
r2
State true or false.
Area of a circle is inversely proportional to the radius of circle.
True
False
The area of a circle is 394.24 cm2. Then the radius of the circle in cm is _______.
11.3
11.2
11.1
11.4
If the radius of a circle is 7√π cm, then find the area of the circle (in square cm).
49π
49
22
154
Find the diameter of a circle in cm whose area is equal to the sum of the area of the two circles of radii 24 cm and 7 cm.
25
62
50
31
State true or false.
If the radius of a circle is 7√π cm, then the area of the circle in cm2 is 49π2.
False
True
In a grass field, a bull is tied to a pole with a rope of length 7 meters. How much area of field is it allowed to be grazed?
(Take π=227)
110 m2
55 m2
100 m2
154 m2