Question

Two equal sides of an isosceles triangle measure 10 cm cach. Find the length of its third
side if its perimeter is 32 cm.​

Answer 1

perimeter of the triangle = sum of all the sides of it

32 = 10 + 10 + x

(let the third side be x)

32 = 20 + x

x = 32 - 20

x = 12cm

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Answer 2

Answer: 8cm

StepsP=2a+b

hb=a2﹣b2

4

Solving forhb

hb=1

2P(4a﹣P)=1

2·32·(4·10﹣32)=8cm

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