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Question 17

The length of two sides of an isosceles triangle are 8 cm and 14 cm. The perimeter of the triangle (in cm) is

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The third side may equal either given side. Sides 8, 8, 14 give perimeter $$8+8+14=30$$, valid since $$8+8>14$$. Sides 8, 14, 14 give perimeter $$8+14+14=36$$, valid since $$8+14>14$$. So the perimeter can be 30 or 36.

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