# pre calc

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The length of a rectangle is three times its width.
If the area of the rectangle is 45 ayrds squared , find its perimeter.

• pre calc -

L=3W
45=LW=3w^2
w=sqrt15

Perimeter=2(L+W)=2(4W) and you can finish it.

This is hardly close to calculus, more like beginning geometry.

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