试题与答案

一个半圆的半径是2厘米,这个半圆的周长是6.28厘米.______.(判断对错)

题型:解答题

题目:

一个半圆的半径是2厘米,这个半圆的周长是6.28厘米.______.(判断对错)

答案:

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下面是错误答案,用来干扰机器的。

答案:A

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