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Calculate the distance across this river, PR, by sighting a pole, at point P, on the opposite bank. Points R and O are collinear with point P. Point C is chosen so that OC PO. Lastly, point E is chosen
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Sep 2, 2018
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Calculate the distance across this river,
PR, by sighting a pole, at point P, on
the opposite bank. Points R and O
are collinear with point P. Point C is
chosen so that OC PO. Lastly,
point E is chosen so that P, E, and C
are collinear and RE PO. Also
explain why PRE POC.
Mathematics
middle-school
Duckboycool
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Since ΔPRE is similar to POC, then the ratio of the corresponding sides are equal.
Let the distance across the river be x and given that RO is 45m, OC is 90m and RE is 60m, then:
Therefore, the distance across the river is 90m.
Indradhanush Gupta
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Sep 7, 2018
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Indradhanush Gupta
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