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3 years ago

This is hard I need help

Mathematics

1 answer:

Andreyy893 years ago

4 0

Answer:

140.22 ft²

Step-by-step explanation:

Surface area is the sum of areas of 4 triangles.

<u>Each triangle has:</u>

b = 9 ft, h = 7.79 ft

<u>Area of each triangle:</u>

A = 1/2bh
A = 1/2*9*7.79 = 35.055 ft²

<u>Surface area:</u>

S = 4*35.055 = 140.22 ft²

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