SOLUTION: The question is "if the length of a rectangle is 3 times the width and the area is 72 square inches, what are the length and the width?" so of course A=L*W and L=3W so I plugged i

Algebra ->  Rectangles -> SOLUTION: The question is "if the length of a rectangle is 3 times the width and the area is 72 square inches, what are the length and the width?" so of course A=L*W and L=3W so I plugged i      Log On


   

Question 893918: The question is "if the length of a rectangle is 3 times the width and the area is 72 square inches, what are the length and the width?" so of course A=L*W and L=3W
so I plugged it all in and came up with 72=W*(3W). Now its 72=3W^2. This is where I'm stuck. I don't remember how to finish it. Could you please help?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You should not be stuck. You went as far as 72=3w%5E2 and this is correct. (Let me use lower case for the width).

3w%5E2%281%2F3%29=72%281%2F3%29
3%281%2F3%29w%5E2=%2824%2A3%29%2F3
1%2Aw%5E2=24
w=sqrt%2824%29
w=sqrt%282%2A2%2A2%2A3%29
highlight%28w=2sqrt%286%29%29