Multi valued perimeter

Geometry Level 2

A triangle with area 12 c m 2 12cm^{2} has two sides of 5 c m 5cm . Then, its perimeter can be A A or B B . Find A + B 2 \frac{A+B}{2} .


The answer is 17.

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1 solution

Aiman Cool
Mar 21, 2014

a²+b²=c², so..a=5cm and b=5cm also...so, another sides you’ll get 16 or 18 by getting the height or base 16cm or 18cm..hence, (16cm+18cm)÷2=17

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