Q1 of 70 Page 19

Write the number of surfaces of a right curcular cylinder.


There are 3 surfaces in a cylinder. (top, bottom, side)


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31

Find the length of 13.2 kg copper wire of diameter 4 mm, when 1 cubic cm of copper weighs 8.4 gm.

 32

A well with 10 m inside diameter is dug 8.4 m deep. Earth taken out of it is spread all around it to a width of 7.5 m to form an ambankment. Find the height of the embankment.

 2

Write the ratio of total surface area to the curved surface area of a cylinder of radius r and height h.

 3

The ratio between the radius of the base and height of a cylinder is 2 : 3. If its volume is 1617 cm3, find the total surface area of the cylinder.