Question

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

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!