How much more area does a square with a side of 2r have than a circle with a radius r? Approximate π by using 22/7.

If a completely fenced-in square-shaped yard requires 140 feet of fence, what is the area, in square feet, of the lot?

Find the area of a square with a diagonal of .

ABCD and EFGH are squares such that the perimeter of ABCD is 3 times that of EFGH. If the area of EFGH is 25, what is the area of ABCD?

If the perimeter of a square is equal to twice its area, what is the length of one of its sides?

What is the area of a square with a diagonal of ?

If the diagonal of a square measures , what is the area of the square?

A half circle has an area of . What is the area of a square with sides that measure the same length as the diameter of the half circle?

If the ratio of the sides of two squares is , what is the ratio of the areas of those two squares?

Eric has 160 feet of fence for a parking lot he manages. If he is using all of the fencing, what is the area of the lot assuming it is square?