Mensurationmedium · Past Paper
A wire is in the shape of a circle of radius 7 cm. If it is bent into a square, what is the area of the square?
A154 sq. cm
B121 sq. cm
C44 sq. cm
D110 sq. cm
✓ Correct Answer: B — 121 sq. cm
Circumference = 2 * (22/7) * 7 = 44. Side of square = 44 / 4 = 11. Area = 121 sq. cm.
Share this question
More from Mensuration
- A cube of side 10 cm is melted to form smaller cubes of side 5 cm. How many such cubes can be formed?
- A cylindrical tank has a capacity of 6160 cubic m. If its depth is 10 m, find the cost of painting its inner curved surface at Rs. 2.50 per sq. m.
- How many 2 cm x 2 cm square tiles are needed to cover the surface of a cube with side 10 cm?
- What is the volume of a sphere of diameter 'd'?
- If the length of each edge of a cube is doubled, how many times does the volume increase?