A rain drop hitting a lake makes a circular ripple. If the radius, in inches, grows as a function of time in minutes according to r(t)=25t+2−−−−√, find the area of the ripple as a function of time. Find the area of the ripple at t=2. Enter the exact answer. For the number π, you can either type pi or you can click the button with π on it. Do not enter any commas in your answer. A= __________ in.2
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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
A rain drop hitting a lake makes a circular ripple. If the radius, in inches, grows as a function of time in minutes according to r(t)=25t+2−−−−√, find the area of the ripple as a function of time. Find the area of the ripple at t=2.
Enter the exact answer. For the number π, you can either type pi or you can click the button with π on it.
Do not enter any commas in your answer.
A=
__________ in.2
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