Three tennis balls each have a radius of 2 inches. They are put into a 12 inch high cylinder with a 4 inch diameter. What is the volume of the...
When a circle's radius triples, what happens to its area?
A = πr^2
When r = 3r, then we have:
a = π(3r)^2
A = 9(πr^2)
This means Area increases...
What is the formula for the volume of a cylinder?
The Volume (V) of a cylinder with radius (r) and height (h) is:
V = πr^2h
Fantasia decided to paint her circular room which had a diameter of 25 feet. She started painting in the center and when she had painted a circle...
The button on Alice's shirt has a diameter of 8 millimeters. What is the button's radius?
Radius = Diameter / 2
Radius = 8/2
Radius = 4
if my diameter is 19 inches, what is my radius?
Radius = Diameter/2
Radius = 19/2
A penny has a diameter of 19 millimeters. What is the radius of the penny.
D = 2r
To solve for r, we divide each side by 2:
r = D/2
A circular balloon is inflated with air flowing at a rate of 10cm3/s. How fast is the radius of the ballon increasing when the radius is 2cm?
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