A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 70 cm/s. Find the rate at which the area within the circle is increasing after each of the following. (a) after 1 s $$40 cm2/s (b) after 4 s cm2/s (c) after 6 s cm2/s

(a) 9800π cm²/s

(b) 39200π cm²/s

(c) 58800π cm²/s

Step-by-step explanation:

As we know,

The area of circle is:

The given value is:

Now,

(a)

After 1 second,

r = 70×1

 = 70 cm

⇒  

(b)

After 2 second,

r = 70×4

 = 280 cm

⇒  

(c)

After 6 seconds,

r = 70×6

 = 420 cm

⇒  

step-by-step explanation:

3024 rhe base is what up in worry about

answer: answer is c!

ok i got to organize the

3/15 and 12/55

3*

aha

3*4 equals 12 but not

a: no

b:

8/24 12/35

no

gautie

it's c

5/18 = 25/90

5*5=25

18*5 = 90

hope that you!

one more happy customer!

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step-by-step explanation: