The area of a circle is approximately 3.14 times the radius squared. Which of the following expressions is a correct way to write this, if the radius is x?

A. 2(3.14)x

B. x(3.14)^2

C. 3.14x^2

D. (3.14x)^2

A farmer has a rectangular field, which measures 100 feet for the length and w feet for the width. If the perimeter is the sum of all four sides of the field, what is an expression for the perimeter of the field? Simplify.

A. 2w + 200

B. 4w

C. 2w + 100 + 100

D. w + 100 + w + 100

macabresubwoofer Nov 12, 2019