2012 · Q80
The diameter of base of a right circular cone is 7 cm and slant height is 10 cm, then what is its lateral surface area?
Elementary MathematicsMensuration
- A110 square cm
- B100 square cm
- C70 square cm
- D49 square cm
Explanation
pi*3.5*10 = 35*pi = 110 square cm.