The area of a circular sunspot is growing at a rate of 1,500 km2/sec. (a) How fast is the radius growing at the instant when it equals 4,000 kilometers? HINT [See Example 1.] (Round your answer to three decimal places.) km/s

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

the answer is b.)

< 1=< 2

the answer is two. hope this !

the answer is y = 11.54

hope this : )