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3The surface area S (in square meters) of a hot-air balloon is given by S(r) = 4x where r is the radius of the balloon (in meters). If the radius r is increasing with time t (in seconds) according to the formula r(t) = -t20, find the surface area S of the balloon as a function of the time t.CLSS(t) =(Type an expression using t as the variable. Type an exact answer, using as needed. Use integers or fractions for any numbers in the expression. Simplify your answer.)
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