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How to find the missing side of this triangle

How to find the missing side of this triangle-example-1

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Answer:

37 mm.

Explanation:

Use Pythagoras theorem

Missing side in small triangle = sqrt (13^2 - 5^2)

= sqrt144

= 12.

So applying the same theorem to the large triangle

x^2 = 12^2 + 35^2

x^2 = 1369

x = 37 mm.

User Rand Scullard
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