SOLUTION: A rectangle is 4 times as long as it is wide. The area is 144 square feet. What is the perimeter of the rectangle? (4x)(x)=144 4x=144 x=36

Algebra ->  Exponents -> SOLUTION: A rectangle is 4 times as long as it is wide. The area is 144 square feet. What is the perimeter of the rectangle? (4x)(x)=144 4x=144 x=36      Log On


   



Question 943246: A rectangle is 4 times as long as it is wide. The area is 144 square feet. What is the perimeter of the rectangle?
(4x)(x)=144
4x=144
x=36

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+A+=+4x%2Ax+
+A+=+4x%5E2+
+A%2F4+=+x%5E2+
+x+=+sqrt%28+A%2F4+%29+
+x+=+sqrt%28A%29%2F2+
+x+=+sqrt%28+144+%29+%2F+2+
+x+=+12%2F2+
+x+=+6+
+4x+=+24+
-------------
+P+=+2%2A6+%2B+2%2A24+
+P+=+12+%2B+48+
+P+=+60+
-------------
The perimeter is 60 ft
check:
+A+=+6%2A24+
+144+=+144+
OK