Mathematics · Mensuration

Initially, the diameter of a spherical balloon is 28 cm. It will explode when its diameter becomes 5 2 times the initial diameter. If air is blown into it at a constant rate of 156 cc/s, in how many seconds will the balloon explode? (Take π ≈ 22 7 )

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1078 s

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Initially, the diameter of a spherical balloon is 28 cm. It will explode when its diameter becomes 5 2 times the initial diameter. If air is blown into it at a constant rate of 156 cc/s, in how many seconds will the balloon explode? (Take &pi; &approx; 22 7 )