# 1 The Area Of A Circular Sun Spot Is Growing At A Rate Of 800km2 S A How Fast Is

1) The area of a circular sun spot is growing at a rate of 800km2/s.
(a) How fast is the radius
growing at the instant when it equals 6,000 km? (Round your answer to three decimal places.)
km/s
2) The weekly sales of Honolulu Red Oranges is given by q = 896 − 20p.Find this maximum revenue.
A r2dAdr 2 rdtdt800 2 6000 drdt 800dr 12000 dtdr0.021 dt R pq p 896 20 p 896 p 20 p 2vertex,896p 22.42 20 R 22.4 10, 035.2

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