The height of a cylinder is equal to its radius... - WAEC Mathematics 2011 Question
The height of a cylinder is equal to its radius. If the volume is 0.216 \(\pi m^3\) Calculate the radius.
A
0.46m
B
0.60m
C
0.87m
D
1.80m
correct option: a
volume of cylinder = (\pi r^2)h
0.216(\pi m^3 = \pi \times r^2 \times 1m)
assumed that h = 1m
0.216 = r2
r2 = 0.216
r = (\sqrt{0.216})
= 0.46
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