Answer
$0.009$
Work Step by Step
Because $0\lt0.3$, by Equation (4): $\int_{0}^{0.3} s^2 ds=\frac{(0.3)^3}{3}-\frac{0^3}{3}=\frac{0.027}{3}-\frac{0}{3}=\frac{0.027}{3}=0.009$
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