Question

What is the area of a rectangle whose length is 12 and whose diagonal is 13?

Answer 1

Answer: 60

Explanation: A=wl
d= square root of w^2 +l^2

Solving for A:

A=l square root of d^2-l^2= 12* square root of 13^2- 12^2=60

Answer 2

Answer: draw the rectangle. you can see that the diagonal will then be the hypotenuse of a right triangle

Step-by-step explanation: