Find the area of curved surface and total surface area
of the cylinders whose heights and radii are given
below :
(ICSE)
(1) h= 12 cm, r = 7 cm
(ii) h= 10 cm, r= 7 cm
(iii) h= 5 cm, r = 21 cm
(iv) h= 20 cm, r= 14 cm
(v) h = 16 m, r= 10.5 m
plzz
Answers
Answered by
5
Hi mate
Here is ur answer
h=12cm,r=7cm
curved surface area of a cylinder = 2pierh
= 2pierh
= 2*22/7*7*12
= 528cm2
Total Surface area of a cylinder = 2pier(r+h)
= 2pier(r+h)
=2*22/7*7 (7+12)
=836cm2
Hope it is helpful.
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Answered by
3
Anwer
CSA = 2πrh
TSA = 2πr ( r + h )
1) CSA = 2 * 22/7 * 7 * 12
= 44 * 12
= 528.
pls follow similar steps for other questions too with formula
TSA = 836
2) CSA = 440
TSA = 748
3) CSA = 660
TSA = 3432
4) CSA = 1760
TSA = 2992
5) CSA = 1056
TSA = 1749
Hope this was helpfulpls
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thank u
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