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Question

In the figures below, find the value of ‘x’


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Solution

In the right angled triangle EDF,D=90. Hence, side EF is the hypotenuse.

According to Pythagoras' theorem,

(EF)2=(ED)2+(DF)2

(17)2=(x)2+(8)2

289=x2+64

x2=28964

x2=225

x2=(15)2

x=15 units

The value of x is 15 units.

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