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Maths Puzzle
Numerical Ability
The length of a rectangle is 8 inches more than twice its width. If the perimeter of the rectangle is 28 inches, find the width of the rectangle.
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Jackie Ruben is bulding a childrens playhouse. she wants each window to have an area of 315 square inches for adequate air. For eye appeal, she wants each window to be six inches higher than wide. what are the dimensions of each window.
can u solve this?
6r^3+7r^2=r
thank you