The area of a circular oil slick on the surface of the sea is increasing at a rate of [150m^2/s] how fast is the radius changing when:

a) the radius is 25 m

b) the area is [1000 m^2]

Answer with Step-by-step explanation:

We are given that

a.Radius =25 m

We have to find rate of change of radius.

We know that

Area of circle,

Differentiate w.r.t time

Substitute the values then we get

b.A=

Substitute the values then we get

Substitute the values then we get

m/s

m/s

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)