PLEASE HELP! 11 POINTS, I KNOW THATS A LITTLE BIT, BUT IF YOU DO HELP WITH THESE 5 EASY QUESTIONS ILL BE SURE TO GIVE U BRAINIES
T AND A THANKS!!!
1 answer:
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Answer:
a)
b)
c)
d)
Step-by-step explanation:
We know that the circle is increasing its radio from an initial state of r=0 cm, at a rate of 5 cm/s.
This can be expressed as:
a) Radius of the circle, r (in cm), in terms of the number of seconds, t since the circle started growing:
b) Area of the circle, A (in square cm), in terms of the circle's radius, r (in cm):
c) Circle's area, A (in square cm), in terms of the number of seconds, t, since the circle started growing:
d) Expanded form for the area A: