Mensurationeasy · Past Paper
The diagonal of a square is 10 cm. What is its area?
A100 sq. cm
B25 sq. cm
C50 sq. cm
D200 sq. cm
✓ Correct Answer: C — 50 sq. cm
Area of a square using diagonal = 0.5 * d^2: 0.5 * 10 * 10 = 50 sq. cm.
Share this question
More from Mensuration
- The lateral surface area of a cylinder is 94.2 sq. cm and its height is 5 cm. Find the radius of its base. (Use π = 3.14)
- The length of a rectangular box is 2 units more than the width and the width is 3 units more than the height. If the total surface area is 112, find the height.
- A right circular cone is 3.6 cm high and its base radius is 1.6 cm. It is melted and recast into a right circular cone with base radius 1.2 cm. Find its height.
- The perimeter of the base of a prism is 20 cm and its height is 15 cm. What is its lateral surface area?
- Calculate the volume of a sphere whose radius is 3 cm. (Take π = 3.14)