Question

What is the perimeter of this triangle ⬆️​

Answer 1

Answer:

36 km

Step-by-step explanation:

We can use the Pythagorean theorem to find a

a^2 +b^2 =c^2

a^2 +12^2 = 15^2

a^2 +144=225

Subtract 144 from each side

a^2 =225-144

a^2 =81

Taking the square root of each side

a = sqrt(81) = 9

Then we need to find the perimeter

a+12+15

9+12+15

36