Mensurationeasy · Past Paper
Calculate the surface area of a sphere if its radius is 0.7 cm.
A6.16 sq. cm
B0.616 sq. cm
C61.6 sq. cm
D616 sq. cm
✓ Correct Answer: A — 6.16 sq. cm
Surface Area = 4πr² = 4 * (22/7) * 0.7 * 0.7 = 4 * 22 * 0.1 * 0.7 = 6.16 sq. cm.
Share this question
More from Mensuration
- A triangular prism has a base perimeter of 24 cm and lateral surface area of 240 cm². Find its height.
- Area of an equilateral triangle is 4*sqrt(3) sq. cm. Its height is:
- What is the total surface area of a cylinder if its base area is 154 sq. cm and its curved surface area is 200 sq. cm?
- Find the area of a triangle with sides 3, 4, 5.
- Find the slant surface area of a cone with radius 7 cm and height 24 cm.