math

1. A cylinder has a volume of 375 cubic centimeters. The radius of the cylinder is 12.5 centimeters. What is the approximate height of the cylinder?
A. 9.6 centimeters
B. 7.5 centimeters
C. 2.4 centimeters**
D. 0.8 centimeter

2. A cylindrical-shaped mug has a diameter of 8 centimeters and a height of 10 centimeters. What is the volume of the mug?
A. 502.4 cubic centimeters
B. 1256 cubic centimeters
C. 2009.6 cubic centimeters
D. 2512 cubic centimeters**

3. What effect does doubling the radius of a cylinder have on the volume of the cylinder?
A. The volume is doubled.**
B. The volume is quadrupled.
C. The volume is halved.
D. The volume is multiplied by one-fourth

Need help!

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  1. 1. pi r^2 h = v
    v = pi (12.5)^2 h = 375
    3*150 h = 375
    h = less than 1
    disagree with you

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    Damon
  2. 2. 3*16*10 or 30*15 about 450
    Hey are you just guessing?

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    Damon
  3. 3, NO!!!! pi R * R * h
    R*R is not R
    2 * 2 is not 2

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    Damon
  4. I wasn't quite sure on my answers. So I gave my best guess

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  5. Would #1 be 0.8?

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  6. For #2, I tried using a calculator but I guess I did the math wrong. Would it be 502.4?

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