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

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.

it could 14.28 but if its not that one then it has to be the 17 one. hope this ! : )

step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square