In the frustum of the cone the top diagram is t... - JAMB Mathematics 1994 Question
A
2h
B
2\(\pi\)h
C
\(\pi\)h
D
\(\frac{\pi h}{2}\)
correct option: a
\(\frac{x}{r}\) = \(\frac{x + h}{2r}\)
2 x r = r (x + h)
Total height of cone = x + h
but x = h
total height = 2h
2 x r = r (x + h)
Total height of cone = x + h
but x = h
total height = 2h
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