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**yorkmanz****Member**- Registered: 2019-01-12
- Posts: 13

questions could not answer?

please explain in details

Thanks much

4. Find the volume of a cylinder with radius = 4m and height = 8m . Round your answer to the nearest m 3 .

A. 101m 3

B. 128m 3

C. 201m 3

D. 402m 3

5. Find the volume of a cylinder with diameter = 21cm and height = 15cm . Round your answer to the nearest cm 3.

A. 315cm 3

B. 1654cm 3

C. 5195cm 3

D. 20,782cm 3

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**Jai Ganesh****Administrator**- Registered: 2005-06-28
- Posts: 48,352

Hi yorkmanz,

4. Volume of cylinder with radius = 4 m.

Height = 8 m.

.

Solution : Volume = 402.1248 cubic meters.

Rounded to 402 cubic meters.

Option (d) is correct.

5. Volume of a cylinder with diameter 21 centimeters and height 15 centimeters.

Here, diameter = 21 centimeters, radius = 10.5 centimeters.

cubic centimeters.

Option (c) is correct.

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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