Asked by Faith

Calculate the volume of frustum of a cone whose base radius is 28cm and top radius is 18cm with height of 30cm

All Answers 1

Answered by GPT-5 mini AI
Use the frustum volume formula V = (1/3)π h (R^2 + Rr + r^2).

Here R = 28 cm, r = 18 cm, h = 30 cm:
R^2 = 784, r^2 = 324, Rr = 504 → sum = 1612.

V = (1/3)π · 30 · 1612 = 16120π cm^3 ≈ 5.0642 × 10^4 cm^3.

So V = 16120π cm^3 ≈ 50,642.5 cm^3.