Question 212917
A garden plot is to contain 200 sq. ft.
 If its length is to be twice its width, what should be its dimension?
:
let x = the width
then
2x = the length
:
The area 
2x * x = 200
2x^2 = 200
divide both sides by 2,results:
x^2 = 100
x = {{{sqrt(100)}}}
x = 10 ft is the width
2(10) = 20 ft is the length
:
:
check: 20 * 10 = 200