The area of a circular sunspot is growing at a rate of 800 km^2/sec. How fast is the radius growing at the

The area of a circular sunspot is growing at a rate of 800 km^2/sec.  How fast is the radius growing at the

instant when it equals 9,000 km? (Round answer to 3 decimal places)

Question: The area of a circular sunspot is growing at a rate of 800 km^2/sec. How fast is the radiusgrowing at the instant when it equals 9,000 km? (Round answer to 3 decimal places)Solution:...