A pyramid of volume 120cm 3 has a rectangular base which measures 5cm by 6cm.
MATHEMATICS
WAEC 2003
A pyramid of volume 120cm3 has a rectangular base which measures 5cm by 6cm. Calculate the height of the pyramid
- A. 5cm
- B. 9cm
- C. 12cm
- D. 15cm
Correct Answer: C. 12cm
Explanation
\(V= \frac{1}{2}\hspace{1mm}base\hspace{1mm}area\hspace{1mm}\times\hspace{1mm}height\\
120=\frac{1}{3}\times 5 \times 6 \times h; h = \frac{120}{10}=12cm\)
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