Mark is making a plan to build a rectangular garden. He has 160 feet of fence to form the outside border of the garden. He wants the dimensions to look like the plan outlined below. Find the area of the rectangle.
4x+2x+3=160/2 --> 6x=77 --> x=77/6 Area= 4x*(2x+3)=4*77/6*(2*77/6+3) ~ 1471. 56 feet^2
Find the area of the blue shaded region in this 14x7 rectangle, with two semicircles of radius 7 drawn.
A rectangle is divided by four lines, as shown, with 4 of the resulting triangles having known areas. Find the area of the quadrilateral that is shaded in grey.
The 2 diagonals of this rectangle divide it into 4 triangles.
If the area of the shaded region is 42, then what is the area of the rectangle?
