Search SchoolNGR

Wednesday, 04 March 2026
Register . Login

In the frustum of the cone, the top diagram is twice the bottom diameter. If the height ...



In the frustum of the cone, the top diagram is twice the bottom diameter. If the height of the frustum is h centimeters, find he height of the cone
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 2h
  • B 2\(\pi\)h
  • C \(\pi\)h
  • D \(\frac{\pi h}{2}\)
Correct Answer: Option A
Explanation:

\(\frac{x}{r}\) = \(\frac{x + h}{2r}\)
2 x r = r (x + h)
Total height of cone = x + h
but x = h
total height = 2h

Share question on: