The height of a pyramid on square base is 15cm. if the volume is 80cm...
MATHEMATICS
WAEC 2000
The height of a pyramid on square base is 15cm. if the volume is 80cm3, find the area of the square base.
- A. 8cm2
- B. 9.6cm2
- C. 16cm2
- D. 25cm2
Correct Answer: C. 16cm2
Explanation
Volume of pyramid with square base = \(\frac{\text{base area} \times height}{3}\)
\(80 = \frac{\text{base area} \times 15}{3}\)
\(80 = 5 \times \text{base area}\)
\(\text{Base area} = 16 cm^2\)
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