The area of a circular sunspot is growing at a late of 1,000 kmzjsec. (a) How Fast is the radius growing at the instant when it equals 9,000 kilometers? HINT [See Example 1.] (Round your answer to three decimal places.) kmfs [b] How fast Is the Iadlus growing at the Instant when the sunspot has an area of 640,000 square kilometers? HINT [Use the area formula to determine the radius at that instant] (Round your answer to four decimal places.) kmfs
The area of a circular sunspot is growing at a late of 1,000 kmzjsec. (a) How Fast is the radius growing at the instant when it equals 9,000 kilometers? HINT [See Example 1.] (Round your answer to three decimal places.)
kmfs [b] How fast Is the Iadlus growing at the Instant when the sunspot has an area of 640,000 square kilometers? HINT [Use the area formula to determine the radius at that
instant] (Round your answer to four decimal places.) kmfs