50 circular plates each of radius 7 cm and thickness 1by 2CM are placed one above another two from a solid right circular cylinder find the TSA and volume of the cylinder so formed
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Given,
No. Of plates = 50
Thickness of each plate = 1/2 cm
Height of the cylinder = 50 x 1/2 = 25 cm
Solution
We know that, tsa of cylinder= 2pie r x(r + h)
Bb. = 2x 22/7 x 7 x(7+25)
= 44 x 32
= 1408 cm ^2
Volume = pie x r square x h
= 22/7 x 7 x 7 x 25
= 7 x 22 x 25
= 154 x 25
= 3850 cm cube
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