Question

A square pyramid has a base area of 25 ft2. The pyramid’s total surface area is 105 ft2.

What is the area of each triangular face?









A.

20 ft2








B.

26 ft2








C.

40 ft2








D.

80 ft2

Answer 1

u find surface area by adding all the sides up

Answer 2

and each triangular face will have the same area

Answer 3

so in this case u would divide 105 by 4

Answer 4

which equals 26.25, which means it is B?

Answer 5

no thats not correct

Answer 6

the total surface area includes the area of the base

Answer 7

ok sorry i forgot that

Answer 8

so the area of the 4 triangles = 105-25 = 80
so now its easy to find the area of 1 triangle

Answer 9

* each triangle

Answer 10

so it is A. 20?

Answer 11

80 / 4 = 20 yes

Answer 12

Okay, thanks :)