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How do you find the volume of cylinders and cones using pie as 3.14?

Okay so I missed a whole period of math because our principal took the basketball players out to eat. My teacher just gave me the work and now its due in two days.

How do I do these problems-

:please give me formulas

:steps

:and the process you would type in the calculator

Here are some of the problems:

Find the volume. Use 3.14 as pie, and round to the nearest 10th.

7.cylinder

radius 7.6cm height=14cm

10.cone

base=116.8cm2

height=15cm

2 Answers

Relevance
  • 1 decade ago
    Favorite Answer

    VOL. OF CYLINDER=pie*r*r*h

    =3.14*7.6*7.6*14

    =2539.123

    which is approximately=2540cu.cm

    VOL. OF CONE=1/3*pie*r*r*h

    pie*r*r=116.8cm

    =584cu.cm

  • Ralph
    Lv 5
    1 decade ago

    cylinder = 3.14 x 2r x h

    cone = b x h / 3

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