Question

What is the perimeter of triangle ABC? Round to the nearest tenth.

VHS_PA_S2_04_L211_L312_UT_Q10.gif

A.
5.8 units

B.
2.4 units

C.
14.8 units

D.
13.8 units

http://static.k12.com/calms_media/media/243500_244000/243674/1/5c65882914aeeec20e9511d4b84031dc8c267393/VHS_PA_S2_04_L211_L312_UT_Q10.gif

Answer 1

To calculate the perimeter of a triangle, you have to add all the side lengths. We don't know what the side length of the hypotenuse (longest side) is. So we work with the Pythagorean Theroem: a^2 + b^2 = c^2. a and b are considered the "legs" of the triangle, and it doesn't matter what side is a or b as long as it isn't the hypotenuse (c). Can you solve from here?

Answer 2

Yes

Answer 3

You're welcome :)