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Which of the following is the height of the cylinder whose radius is 7 CM and curved surface area is 660cm²? (Use π = |
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Answer» Total SURFACE area=2πr(r+h) r=7cm ⇒968=2× 7 22
×7(7+h) ⇒ 44 968
=7+h ⇒h+7=22 ⇒h=22−7 =15cm. |
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