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?

Question

I'm not sure about this one-these are my choices:my choice is A but I'm not sure

a. the new volume will be 1/2 as big as the original

b. the new volume will be 2 times bigger than the original

c. the new volume will be 1/8 as big as original

d. the new volume will be 8 times bigger than original

Answer 1

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~ :)

Answer 2

oh, i see.. the choices are wrong. i guess you typed it wrong because "volume" is in the choices.. it must be "area" since it is the required. (and rectangles don't have volume)