SOLUTION: The area of a rectangle is 240 sq in. The length is twice the width. What is the area of the rectangle?

Question 438801: The area of a rectangle is 240 sq in. The length is twice the width. What is the area of the rectangle?
Found 2 solutions by nerdybill, rwm:
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
The area of a rectangle is 240 sq in. The length is twice the width. What is the area of the rectangle?
.
The problem already gives you the area as 240 sq in.
.
Unless you were looking for the dimensions:
Let w = width
then
2w = length
.
w(2w) = 240
2w^2 = 240
w^2 = 120
w = 10.95 inches (width)
.
length:
2w = 2(10.95) = 21.9 inches
Answer by rwm(914) (Show Source): You can put this solution on YOUR website!
L*w=240
L=2w
2w*w=240
w*w=120
w=sqrt(120)
w=sqrt(12*10)
w=2 sqrt(30)=10.95
L=4 sqrt(30)=2*10.95=21.90
RELATED QUESTIONS
The length of a rectangle is 4 inches less than twice the width. if the area of the... (answered by checkley71)
the length of a rectangle is 8 more than the width its area is 240 ft.... (answered by ikleyn,josgarithmetic)
Length of a rectangle is 6 inches less than twice the width if the area of the rectangle... (answered by ewatrrr)
The area of a rectangle is 128 sq. ft. If the width is twice the length, what is the... (answered by TimothyLamb)
The length of a rectangle is 4 cm less than twice the width. If the area is 240 cm2, what (answered by ewatrrr)
A rectangle is 8 cm longer than it is wide. Find the dimensions of the rectangle if its... (answered by Grinnell,mananth)
The length of a rectangle is 5 in. more than its width. Its area is 75 sq. in. what is... (answered by checkley71,solver91311)
the length of a rectangle is 5 meters less than twice the width, if the area of the... (answered by jorel1380)
A CROSS-SECTIONAL AREA OF A RECTANGLE DUCT IS 240 SQ. IN.IF THE LENGTH IS 5 INCHES LESS... (answered by Boreal)