the radius of right circular cylinder is 20 cm and its curved surface area is 1760 CM square find its height
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Answer:
Step-by-step explanatio7n:
Radius =20cm
Curved surface area=1760 cm ^2
CSA =22×R×L/7
1760=22×20×L/7
1760=440L/7
1760×7/440=L
4×7=L
L=28cm
Now
L^2=H^2+R^2
28×28=H^2+20×20
784=H^2+400
784-400=H^2
384=H^2
H=19.59cm answer
am2741115:
Sorry the question read by me was another one
Instead of cylinder I did for cone
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14 is the answer........
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