what is the surface area of this square pyramid?

round your answer to the nearest tenth, if necessary.

a. 43.8yd^2
b. 66.6yd^2
c. 105 yd^2
d. 171.6^2

what is the surface area of this square pyramid round your answer to the nearest tenth if necessary a 438yd2 b 666yd2 c 105 yd2 d 17162 class=

Respuesta :

Answer:

c. 105 yd^2.

Step-by-step explanation:

First find the slant height (h) of each of the triangular walls:

tan 60 = h /  3.1

h = 3.1 tan 60

= 5.369 yds.

Area of each side = 3.1* 5.369

= 16.645

Total surface area of the pyramid

= 4 * 16.645 + 6.2^2

= 105.02 yd^2.

The answer is C because that’s the answer and I had to put at least twenty characters