The area of a parallelogram is 72 cm^2 and its altitude is twice the corresponding base. What is the length of the base? Choose the correct choice from the following choices.
A) 1 cm	B) 3 cm	C) 6 cm	D) 4 cm	E) 2 cm
let base= x cm   height = 2x cm   area = x Ã— 2x=2x^2   area=x Ã— 2x=2x^2   Area is given as 72 cm^2   2x^2=72   x^2=36   x=6 cm   ANSWER:6 cm
<result>C</result>
The area of a parallelogram is 72 cm^2 and its altitude is twice the corresponding base. What is the length of the base?