The volume of a pyramid with height 15cm is 90c... - WAEC Mathematics 2016 Question
The volume of a pyramid with height 15cm is 90cm3. If its base is a rectangle with dimension xcm by 6cm, find the value of x
A
3
B
5
C
6
D
8
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Correct Option: A
Volume of pyramid = (\frac{1}{3})lbh
90 = (\frac{1}{3} \times x \times 6 \times 15)
x = (\frac{90 \times 33}{6 \times 15})
= 3
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