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Maths (Primary Classes)

Volume of cylinder = πr2h

= π x r x r x h

 

EXAMPLE

Find the volume of a cylinder of radius 3 ½ cm and height 12cm

Solution

 Volume = π x r x r x h

=22  x 7 x 7 x 12cm

7   x  2  x  2  x  1

= 22 x 7 x 3

                    1 x 1 x 1

                = 462cm3

 

Exercise

(take π= 22/7) Find the volume of cylinders whose radii and heights are given as:

  1. Radius 3.5cm, height = 10cm
  2. Radius 10.5, height 10m
  3. Radius 4.2cm, height15cm
  4. Diameter = 1o½cm, height 16cm
  5. Diameter = 14cm, height 15cm

 

See also

AREA OF RIGHT ANGLED TRIANGLE

PROFIT AND LOSS PERCENT

SIMPLE INTERREST

MONEY: PROFIT AND LOSS

SIMPLE PROBLEMS ON PERCENTAGES

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