Question

2 sides of a triangle are 15cm and 12 cm. the perimeter of the triangle is 35cm. what is the third side of the triangle?

Answer 1

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Step-by-step explanation:

$let \: 1st \: side \: be \: a \: =15cm \\ 2nd \: side \: be \: b = 12cm \\ and \: third \: side \: be \: c \\ \\ therefore : \\ perimeter \: of \: triangle = 35cm \\ a + b + c = cm \\ 15cm + 12cm + c = 35cm \\ c = 35cm - 27cm \\ c = 8cm \\ third \: side = 8cm$

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