SOLUTION: If a rectangle has an area of 144ft squared, its length is 18 ft, and the width is 8 ft. What is the length of the diagonal? I dont know how to find it.

Question 403586: If a rectangle has an area of 144ft squared, its length is 18 ft, and the width is 8 ft. What is the length of the diagonal? I dont know how to find it.
Found 2 solutions by Alan3354, mananth:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!

d =~ 19.7 ft

Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
If a rectangle has an area of 144ft squared, its length is 18 ft, and the width is 8 ft. What is the length of the diagonal? I dont know how to find it.
...
the diagonal and the sides of the rectangle form a right triangle.
Th diagonal D is the hypotenuse and the sides of the rectangle are the legs of the triangle.
...
8^2+18^2= D^2
64+324= D^2
384=D^2

D = 19.6 ft
RELATED QUESTIONS
A garden has an area of 308 ft squared. Its length is 8 ft more than its width. What are... (answered by Alan3354,josgarithmetic)
Find the length of the diagonal of a rectangle whose length is 8 ft and whose width is... (answered by nerdybill)
if the area of a rectangle is 7200 ft squared and the length is 120 ft what is the length (answered by ewatrrr)
If a rectangle has an area of 400ft and the width is 16 ft what is the... (answered by Nyancat)
if a rectangle has an area of 875 sq ft what is its length, perimeter,... (answered by Earlsdon)
the length of a rectangle is 6 ft longer than its width and the rectangle has a perimeter (answered by colliefan)
The area of a rectangle is 36 sq. ft. If its width is 9 ft, what is the... (answered by MathLover1)
A rectangle perimeter has 46 ft and width 8 ft. Find the length of the... (answered by ankor@dixie-net.com)
a rectangle has a diagonal length of 15 ft and a width that is 3 more than its length.... (answered by Cromlix)