Question

The diagram shows a pyramid whose base is a regular pentagon of area 42 cm2 and whose height is 7 cm.

What is the volume of the pyramid?



Question 1 options:

98 cm3


105 cm3


126 cm3


147 cm3

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Answer 1

We know, Volume = Area of base pentagon * h/2
V = 42 * 7/2
V = 21 * 7
V = 147 cm³

In short, Your Answer would be 147 cm³ [ Option D ]

Hope this helps!