Asked by Ashley
Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 7.5 mi^2/hr. How rapidly is radius of the spill increasing when the area is 8 mi^2?
I tried using A=(pi)r^2
and dA/dt=2(pi)r(dr/dt)
and plugging in 7.5=2(pi)8(dr/dt)
but the answer is incorrect. Please help!
I tried using A=(pi)r^2
and dA/dt=2(pi)r(dr/dt)
and plugging in 7.5=2(pi)8(dr/dt)
but the answer is incorrect. Please help!