Question

A square pyramid has a base area of 36 ft2. The pyramid’s total surface area is 144 ft2.

What is the area of each triangular face?

A.
108 ft2

B.
54 ft2

C.
36 ft2

D.
27 ft2

Answer 1

plz help

Answer 2

is the pyramid's bottom base an equilateral triangle?

Answer 3

yes

Answer 4

i think

Answer 5

Lets the (surface area of each) side=x
so 36+3x=144
see how I get this equation?

Answer 6

yes

Answer 7

it's not that though

Answer 8

look at the answers

Answer 9

Cool, your smart, solve for x to find each side

Answer 10

@angel12310, solve for x, you will get one of the choices.

Answer 11

what i don't know how i'm not good at this only fractions

Answer 12

36+3x=144
(36 is base, and 3x is all three side-faces of the pyramid.)

subtract 36 from both sides and divide both sides by 3.

Answer 13

how???