The area of a circular sunspot is growing at a rate of 500 km / sec ( 2 ) How fast is the radius growing at the instant when it equals 3 000 kilometers ? HI IS ? HINT ( See Example 1 . I ( 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 of 250,000 square kilometers ? HI IS ? HINT [Use the area formula to determine the radius at that Instant . ] ( Round your answer to four decimal places . ) KM /s
The area of a circular sunspot is growing at a rate of 500 km / sec
( 2 ) How fast is the radius growing at the instant when it equals 3 000 kilometers ? HI
IS ? HINT ( See Example 1 . I ( 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 of 250,000 square kilometers ? HI
IS ? HINT [Use the area formula to
determine the radius at that Instant . ] ( Round your answer to four decimal places . )
KM /s