Two identical circles of radius r are inscribed in a rectangle.
a)Find the area of the rectangle as a function of r.
b)Express the perimeter of the rectangle as a function of r.

Question

Two identical circles of radius r are inscribed in a rectangle. 
a)Find the area of the rectangle as a function of r.
b)Express the perimeter of the rectangle as a function of r.

ddcamp · Answer

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ddcamp · Answer

To find area, you need length and height. Do you know how to find those from the picture I gave?

anonymous · Answer

Well the area of a rectangle is lh and the area of a circle is pi(r^2) right? So I thought it would be lh-2(pi(r^2)) but its not

ddcamp · Answer

Can you find the height in terms of the radius? (Hint: The height is the same as the circle's diameter)