A square piece of paper of side 12 cm is rolled to form a cylinder find the CSA of the cylinder
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solu:- Given:- Side of square piece of paper 12cm rolled to make a cylinder,
it's Height = 12 cm
it's circumference of top circle = 2πr
12cm = 2×22/7 ×r
r = 12/2×7/22
r = 84/44
r = 1.90... cm
Since, We know that
CSA of cylinder= 2πrh
= 2×22 / 7×1.90×12
= 1003.2 / 7
= 143.31.... (@pprox)
Hope it is helpful to you ...
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it's Height = 12 cm
it's circumference of top circle = 2πr
12cm = 2×22/7 ×r
r = 12/2×7/22
r = 84/44
r = 1.90... cm
Since, We know that
CSA of cylinder= 2πrh
= 2×22 / 7×1.90×12
= 1003.2 / 7
= 143.31.... (@pprox)
Hope it is helpful to you ...
Mark as Brainlist Answer ...
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