2014 · Q48
What is the diameter of the largest circle lying on the surface of a sphere of surface area 616 square cm?
Elementary MathematicsMensuration
- A14 cm
- B10.5 cm
- C7 cm
- D3.5 cm
Explanation
4πr^2 = 616 gives r = 7 cm; largest circle (great circle) diameter = 14 cm.