A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 60 cmys.(a)Express the radius r of this circle as a function of the time t (in seconds).(b)If A is the area of this circle as a function of the radius, find A8r and interpret it.

the anwser is d) 75°

step-by-step explanation:

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

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