答案:B
留意該最大絕對誤差
留意該最大絕對誤差
$\begin{array}{cl}
= & \dfrac{1}{2} \times 1 \\
= & 0.5\text{ cm}
\end{array}$
所以,該球體的半徑的最小可取值
$\begin{array}{cl}
= & 8 – 0.5 \\
= & 7.5 \text{ cm}
\end{array}$
所以,該球體的表面面積的最小可取值
$\begin{array}{cl}
= & 4 \pi (7.5)^2 \\
= & 225\pi\text{ cm}^2
\end{array}$