Homework Help: algebra

Posted by Mary on Sunday, May 15, 2011 at 7:52am.

If the length and width of a rectangle are each multiplied by 3, how would the new area of the rectangle compare with the original area of the same rectangle?

would it be 9 times greater?

algebra - Jai, Sunday, May 15, 2011 at 9:05am
yes~ :)

original area:
A = L*W
new area:
A' = (3L)*(3W)
A' = 9*(L*W) or
A' = 9*A

thus there is no correct answer in the choices, since the new area is 9 times greater than the original.

hope this helps~ :)

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