The length of a triangle is twice that of its width. If the area of the triangle is 72 square inches

Question

Then find the length and width. 

Answer 1

Area of a triangle: A = 1/2 * length * width

 

length = 2 * width,

 

Substitute this into the area equation to get the following:

 

A = 1/2 * (2*width) * width = width².

 

Set the area equal to 72: A = 72 = width². This implies that the width is √72.

 

Recall that the length = 2 * width, so length = 2√72.