Question

A triangle has side lengths of (9x+3) centimeters, (6x−10) centimeters, and (y−2) centimeters. Which expression represents the perimeter, in centimeters, of the triangle? I don't know.Love it!Very cool!

Answer 1

Perimeter is defined as the length of the "boundary" of a triangle.

The boundary will simply have the length of all the sides combined.

So we just add the length of all the sides up.

Perimeter = 15x + y - 9

As the lengths given to us are in centimetres, the perimeters unit will also be in centimetres.