Question
The area of a circular sunspot is growing at a rate of700km 2 /sec. (a) How fast is the radius growing at the instant when
The area of a circular sunspot is growing at a rate of700km2/sec.
(a) How fast is the radius growing at the instant when it equals6,000kilometers? HINT [See Example 1.] (Round your answer to three decimal places.)
km/s
(b) How fast is the radius growing at the instant when the sunspot has an area of810,000square kilometers? HINT [Use the area formula to determine the radius at that instant.] (Round your answer to four decimal places.)
km/s
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A Survey of Mathematics with Applications
Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde
10th edition
134112105, 134112342, 9780134112343, 9780134112268, 134112261, 978-0134112107
