Question

You are wrapping a birthday gift that is packaged in a specially made pyramid-shaped box.The base of the box measures 10 inches by 9 inches and the slant height is 6 inches. How much paper do you need to wrap the box?You are wrapping a birthday gift that is packaged in a specially made pyramid-shaped box.The base of the box measures 10 inches by 9 inches and the slant height is 6 inches. How much paper do you need to wrap the box?

Answer 1

2826 inches^2

Explanation:

The general formula for the total surface area of a regular pyramid is

T.S.A.=12pl+B

Where p represents the perimeter of the base, l the slant height and B the area of the base.

The perimeter of the base is.

p=2L+2W

P=2*10+2*9

P=20+18

P= 38 inches

The area of the base is.

B=10*9

B=90in^2

T.S.A.=12(38)(6)+90

T.S.A=2736+90

T.S.A=2826 inches^2