Answer:
47.88 in^2 of paper.
Step-by-step explanation:
The amount of paper needed for the base = 4.2^2 = 17.64 in^2.
There are 4 triangular faces.
The area of each triangular face = 1/2* base * height
= 1/2 * 4.2 * 3.6
= 7.56 in^2
That is a total of 4 * 7.56 = 30.24 in^2.
So the total amount of paper need to cover the entire pyramid
= 17,64 + 30.24
= 47.88 in^2.
