Question

Find the surface area of the square pyramid if the slant height is 13mm and the base length is 11mm

a) 264mm squared
b) 286mm squared
c) 335.5mm squared
d) 407mm squared

Answer 1

The surface area of the square pyramid if the slant height is 13mm and the base length is 11mm is 407 sq.mm.

Explanation:

Slant height of square pyramid = l = 13 mm

Base length of square pyramid = b = 11 mm

Formula of surface area of square pyramid =
`b^2+2bl`

Substitute the values in the formula :

Surface area of square pyramid =
`11^2+2(11)(13)`

Surface area of square pyramid =407 sq.mm.

Hence the surface area of the square pyramid if the slant height is 13mm and the base length is 11mm is 407 sq.mm.