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ziro4ka [17]
3 years ago
10

Two walls and a ceiling of a room meet

Mathematics
1 answer:
Lelechka [254]3 years ago
6 0
The position of the fly is shown as cross in the diagram below

The distance of the fly from the ceiling is given as y 

We need to work out the distance x to be able to work out the value of y

by the Pythagoras theorem

x^{2} = 8^{2} + 1^{2}
x^{2} =65
x= \sqrt{65}

by Pythagoras theorem

y= \sqrt{9^{2}- ( \sqrt{65} )^{2} }
y = \sqrt{16} =4

The distance of the fly from the point P is 4m

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