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A pyramid has an equilateral triangle of side 6 cm as its base and its vertical height is 10 cm. Taking √3 = 1.73, find its volume in $cm^{3}$ .

Competition practiceAreas & Volumes

A51.9
B155.7
C103.8
D25.95

Step-by-Step Solution

Base area =

(1.73/4) \times 36 = 1.73 \times 9 = 15.57 cm^{2}

. Volume =

(1/3) \times 15.57 \times 10 = 51.9 cm^{3}

.

Answer: A) 51.9

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