Tthe area of a circle increases at a rate of 5 cm^2/s. Required:
a. How fast is the radius changing when the radius is 4 cm?
b. How fast is the radius changing when the circumference is 5 cm?

(a) 0.198 cm/s (b) 1 cm/s

Step-by-step explanation:

It is given that,

The rate of change of area of a cicle,

(a) The area of a circle is given by :

Differentiate both sides,

(b) Circumference, = 5 cm

Hence,

(a) 0.198 cm/s (b) 1 cm/s

b. hannah is playing with her cousin at

step-by-step explanation:

a child is 12 years old, and his father is 32 years older. in how many years will the age of the father be 2 times the age of the child?

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this needs to be the answer format, or else your answer is incomplete.

if the number of years is x, then the equation is

in __ years