Question

6.4 is the width and the height is 7.8 what is the lateral and surface area of the square pyramid

Answer 1

Surface area of the square pyramid is 140.8 sq unit.

Explanation:

Given,

Length (b) of each side of the square base = 6.4 unit

Height (h) of the pyramid = 7.8 unit

To find the surface area of the square pyramid.

Formula

Surface area of the square pyramid = 2bh+
`b^(2)` sq unit

Hence,

Surface area of the square pyramid = 2×6.4×7.8+
`6.4^(2)` sq unit

= 99.84 + 40.96 sq unit = 140.8 sq unit.