Question

I'll medal if someone helps me with this!
The surface area of this pyramid is one hundred eighty-nine square centimeters. The area of the square base is forty-nine square centimeters. What is the area of one triangular face of the lateral surface? Show the steps of your solution and explain your work.

Answer 1

since the base is a square the 4 triangles making up the sides are equal in area
total area of the triangular faces = 189-49 = 140 cm^2
so the area of 1 face = ?

Answer 2

I really don't mean to sound like an idiot, but what does the ^ in the problem mean? Other than that I believe I can solve it, just give me a minute.

Answer 3

so 189-49 is 140...

Answer 4

waiiit

Answer 5

does this ^ mean squared? I think it does, sorry XD

Answer 6

Is the area of face 1 140?

Answer 7

yes - square centimeters

Answer 8

140 cm^2 is the total area of the 4 faces

Answer 9

so divide by 4?

Answer 10

35!

Answer 11

Thank you! Sorry you had to see the real idiotic side of me >.>

Answer 12

no 140 is the area of all 4 faces
so area of any 1 face = 140/4

Answer 13

but isn't 140/4 35?

Answer 14

yes 140/4 = 35

thats your answer each triangle has the area 35 cm^2