Math Is Fun Forum

yorkmanz

Member

Registered: 2019-01-12

Posts: 13

HELP: questions could not answer

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

ganesh

Administrator

Registered: 2005-06-28

Posts: 34,902

Re: HELP: questions could not answer

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.

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