Question

Find the perimeter of the right triangle.

Answer 1

I got 54

Answer 2

a^2 + b ^2 = c^2
Now you have a and c but you don't have b
9^2 + b^2 = 15^2
When you solve for b you get b = 12
When you add 12 + 9 + 15 = 36 :)

Answer 3

yay! how about this last one?
Find the perimeter of an equilateral triangle with side length of 12 inches.

Answer 4

Equilateral triangles have equal side lengths so a triangle has 3 sides.

\[3\times12 = 36\]