SOLUTION: the length of the rectangle is TWICE the width. th length of the diagonal is 25cm work out the area give ur answer as an integer.

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Question 270827: the length of the rectangle is TWICE the width.
th length of the diagonal is 25cm
work out the area
give ur answer as an integer.
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
the length of the rectangle is TWICE the width. L=2W
the length of the diagonal is 25cm. C=25
LW=Area, 3W=Area
L^2+W^2=C^2
%282W%29%5E2%2BW%5E2=625
4W%5E2%2BW%5E2=625
5W%5E2%2F5=625%2F5
sqrt%28W%5E2%29=sqrt%28125%29
W=sqrt%28125%29
3w=Area
3%28sqrt%28125%29%29=A
33.541019662496845
highlight%2834cm%5E2%29