Fifty circular plates each of radius 7 cm and thickness 1/2 cm are placed one above another to form a solid right circular cylinder. Find the total surface area and the volume of the cylinder so formed.
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The height of the cylinder would be the thickness of each plate multiplied by no. of plates.
Height(h)= 1/2*50 cm=25 cm
we have given the radius as 7 cm.
Calculating TSA and volume.
TSA of cylinder= 2πr(h+r)
Putting values we get
2*22/7*7*(25+7)
44*32=1408 cm^2
Volume of cylinder=πr^2h
Putting values we get
22/7*7^2*25
22*7*25=3850 cm^3
Hope it helped...
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