What is the circumference of a circle with radius 20cm

How many factors of 2016^2016 have 2016 factors?

An advertising company charges $40 per half-page advertisement and $75 per full-page advertisement. Michael has a budget of $800 to purchase 13 advertisements.

Scientists on a submarine are investigating Earth's magnetic field. The submarine is at a depth of feet when the scientists detect a signal frequency from the ocean floor. They dive farther down to a depth of feet to check the signal.

Which is the better buy? A. 6-foot roll of waxed paper for $2.16 B. 91-inch roll of waxed paper for $3.64

True or False: The hypotenuse is the longest side of a right triangle. A) yes B) no

What is the square root of 517? And how do I show my work.

A bowl at a party holds 3 gallons (384 cups) of punch. How many 1 1/2 cup glass can be served from a full punch bowl?

2 times 2 plus 10 plus 200 plus 56

Y varies inversely with x and y = 5 when x = 2. Which is the inverse variation equation for the relationship? A y=1/2x B y=x+2 C y=10/x D y=2x

F (x) = 3x^2-2x g (x) 9x^2-x+7