Question

The width of a rectangle is 3 feet and the diagonal is 5 feet. What is the area of the rectangle?

Answer 1

`A=12 feet^2`

Explanation:

According to Pythagorian Theorem:

`5^2=3^2+x^2`

`x^2=5^2-3^2`

`x=sqrt(25-9)`

`x=4 feet`

The area is:

`A=3xx4=12 feet^2`