document.write( "Question 151280: A high-altitude spherical weather balloon expands as it rises due to the drop in atmospheric pressure. Suppose that the radius r increases at the rate of 0.03in./sec and that r = 48in. at time t = 0; Determine an equation that models the volume v of the balloon at time t, and find the volume v of the balloon at time t, and find the volume when t = 300 sec\r
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Algebra.Com's Answer #111193 by ankor@dixie-net.com(22740)\"\" \"About 
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A high-altitude spherical weather balloon expands as it rises due to the drop in atmospheric pressure. Suppose that the radius r increases at the rate of 0.03in./sec and that r = 48in. at time t = 0; Determine an equation that models the volume v of the balloon at time t, and find the volume v of the balloon at time t, and find the volume when t = 300 sec
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\n" ); document.write( "Volume of a sphere: V = \"%284%2F3%29pi%2Ar%5E3\"
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\n" ); document.write( "Volume when the balloon is launched (t=0):
\n" ); document.write( "V = \"%284%2F3%29pi%2A48%5E3\"
\n" ); document.write( "V = 463,246.7 cu inches
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\n" ); document.write( "The equation for this problem: t = time in seconds
\n" ); document.write( "V = \"%284%2F3%29pi%2A%2848%2B.03t%29%5E3\"
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\n" ); document.write( "For t = 300
\n" ); document.write( "V = \"%284%2F3%29pi%2A%2848%2B.03%2A300%29%5E3\"
\n" ); document.write( "V = \"%284%2F3%29pi%2A%2848%2B9%29%5E3\"
\n" ); document.write( "V = \"%284%2F3%29pi%2A57%5E3\"
\n" ); document.write( "V = 775,734.6 cu inches after 300 sec
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