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If the length of diameter of the ball used for playing shotput in our school is 7 cm. let us write by calculating how many cubic cm of iron is there in the ball.If the length of diameter of a solid snhere is 28 cm and it |
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Answer» ong>Answer: Correct option is C 28cm Volume of sphere = 3 4
πr 3
⇒r=7cm vol. of sphere = 3 4
π(7) 3 = 3 1372π
3 __(1) vol of CYLINDER =πR h __(2) from eq (1) and (2) 3 4
π(7)(7)(7)=π(R)(R) 3 7
R=14cm Diameter of cylinder =28cm |
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