SOLUTION: The area of a rectangle is 42 square inches. If the length is 3 times the width, then find the dimensions of the rectangle. Round off your answers to the nearest hundredth.

Algebra ->  Rectangles -> SOLUTION: The area of a rectangle is 42 square inches. If the length is 3 times the width, then find the dimensions of the rectangle. Round off your answers to the nearest hundredth.      Log On


   

Question 1091339: The area of a rectangle is 42 square inches. If the length is 3 times the width, then find the dimensions of the rectangle. Round off your answers to the nearest hundredth.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

The area of a rectangle is 42 square inches:LW=42...eq.1
the length is 3 times the width:L=3W ...eq.2
LW=42....substitute L
3W%2AW=42
3W%5E2=42
W%5E2=42%2F3
W%5E2=14
W=sqrt%2814%29
W=3.741657386773941
W=3.74
L=3W
L=3%2A3.74
L=11.22
the dimensions of the rectangle are: L=11.22inches and W=3.74 inches