Find the area of this circle.
Use 3.14 to approximate .
Α = πη2
20 ft
A = [? ] ft2

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin