Question

Keaton drew an equilateral triangle on the computer. if the perimeter of the triangle is 29.4 centimeters, the length of a side of the triangle is ____ centimeters.

Answer 1

29.4÷3=9.8 or just 10

Answer 2

the length of a side of the triangle is
`9.8\ cm`

Explanation:

we know that

An equilateral triangle has three equal sides and three equal angles

The perimeter of an equilateral triangle is equal to

`P=3b`

where

b is the length side of an equilateral triangle

In this problem we have

`P=29.4\ cm`

Substitute in the formula and solve for b

`29.4=3b`

Divide by
`3` both sides

`b=29.4/3`

`b=9.8\ cm`