Poplar shadow

The nine-meter poplar casts a shadow 16.2 m long. How long does a shadow cast by Peter at the same time, if it is 1.4 m high?

Correct result:

x =  2.52 m


9:16.2=1.4:x  x=1.4 16.29=6325=6325 m=2.52 m

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