Question on: WAEC Mathematics - 2004
What is the volume of a solid cylinder of diameter 7cm and height 7cm? (Take (\pi = \frac{22}{7}))
A
38.5cm3
B
77cm3
C
269.5cm3
D
1078cm3
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Correct Option: C
Volume of a solid cylinder = Base area x height
Base area (=\pi r^2 =\frac{22}{7} \times \frac{7}{2}\times \frac{7}{2} = \frac{77}{2})
Volume of a solid cylinder = (\frac{77}{2}\times \frac{7}{1} = \frac{539}{2}cm^3<br />
=269.5cm^3)
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