题目内容
如图,小伟在打网球时,击球点距离球网的水平距离是8米,已知网高是0.8米,要使球恰好能打过网,且落在离网4米的位置,则球拍击球的高度h为______米.
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如图:
∵AB∥CD
∴△ABE∽△CDE,
∴CE:AE=CD:AB
∴4:12=0.8:AB
∴h=AB=2.4米.
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∵AB∥CD
∴△ABE∽△CDE,
∴CE:AE=CD:AB
∴4:12=0.8:AB
∴h=AB=2.4米.
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