Question

what's the volume of a right pyramid whose base is a square with a side 6 m long and whose altitude is equal to the base side? question 17 options: a) 216 m3 b) 36 m3 c) 72 m3 d) 108 m3

Answer 1

V=
`(lwh)/(3)`

square base means equal length and width

length(
`l`) = 6m ∴ width(
`w`) = 6m

altitude is equal to base side,

∴ height(
`h`) = 6m

substitute into formula

V=
`(lwh)/(3)`

V=
`(6*6*6)/(3)`

V=
`(36 *6)/(3)`

V=
`(36*2*3)/(3)`

V=
`36*2`

V=72m^3