SOLUTION: what is the formula for finding the base of a rectangle given the area and height,please?

Suppose we are given the area = 221 and the height = 13 

We just use the area formula (we don't need another one)



Replace A by 221 and H by (13)





Then we divide both sides by 13



Cancel the 13's



We divide 221÷13

    17 
13)221
   13
    91
    91
     0 

So 



The base is 17.

Edwin

Hi, there--

Let A be the area of the rectangle.
Let B be its base.
Let H be the height.

The most common formula for the area of a rectangle is 


We can rewrite this in "base equals" form by dividing both sides by H.



The H is the numerator and denominator on the right side cancel each other because H/H=1.



In other words, to find the base, divide the area by the height.

Hope this helps,
Mrs. F
math.in.the.vortex@gmail.com