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Mathematics, 08.06.2021 19:30 mochoa4

A spherical hot air balloon has a diameter of 55 feet. When the balloon is inflated, the radius increases at a rate of 1.5 feet per minute. Approximately how long does it take to inflate the balloon to 2/3 of of its maximum volume? Use
Pin= 3.14 and V=4/3pir^2

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