227k views
0 votes
A triangle has an area of 221.16 square inches.The height of the triangle is 29.1. What is the length of the back of the triangle?

User Jzd
by
6.6k points

1 Answer

6 votes
The formula of the area of a triangle with the height h and the base b:

A_\Delta=(bh)/(2)
We have:

A_\Delta=221.16\ in^2\\h=29.1\ in\\b=?
Substitute:

(29.1b)/(2)=221.16\\\\14.55b=221.16\ \ \ |:14.55\\\\b=15.2\ in

User Gbryant
by
7.4k points