Acircular oil spill continues to increase in size. the radius of the oil...
A(r(t)) = (0.5 + 2t)
The area at time t is given by
We know the radius of the oil spill as a function of time, and we know the area as a function of radius, and we want the area at time t. In other words we are looking for area as a function of time
We find by putting into as a substitute to r:
Which is our answer.
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