Question

Find the surface area of polyhedra
Pls!! show how you got the surface area ​​

Answer 1

52.48

Explanation:

find the cross sectional area which is the triangle

triangle = 1/2 x 8.2 x 6.4 = 26.24

then, use the area to multiply by the extended length of 2

26.24 x 2 = 52.48