直径是
1×2=2(厘米)
长可以剪
20÷2=10(个)
宽可以剪
15÷2=7(个)(去尾法)
最多能剪
10×7=70(个)
长20厘米,宽15厘米的长方形纸片,最多能剪( )个半径是1厘米的圆
长20厘米,宽15厘米的长方形纸片,最多能剪( )个半径是1厘米的圆
数学人气:769 ℃时间:2019-08-20 10:08:58
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