Find the Volume for the following figure.
h=21 un
A
r=20 un

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The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)