Question

side of a triangle two sides of which are 18cm and 10cm and the perimeter is42cm?​

Answer 1

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Third side Is be x.

:. ➡️ perimeter = sum of all sides

➡️ 42 = 18 + 10 + x

➡️ 42 = 28 + x

Therefore,

x = 42 - 28

➡️ x = 14 cm.

Ans : The length of third side Is 14 cm.

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Answer 2

14 cm
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