Which formula represents a linear function? A
area of a circle: A=πr^2
B
volume of a sphere: V=4/3πr^3
C
area of a square: A=s^2
D
circumference of a circle: C=2πr

The circumference of a circle is 5 pi cm. what is the area of the circle?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.