Question

if the perimeter of an isosceles triangle is 50 cm .if one of the two equal sides is 18 cm find the third side ​

Answer 1

Answer:

Perimeter of triangle= sum of all sides

50= 18 + 18 + x

50 = 36 + x

x = 50 - 36 = 14

therefore, third side is 14cm.

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Answer 2

Answer:

Let the third side of isosceles triangle be x

Then, the other two side of isosceles triangle be 18cm

A/Q

perimeter of isosceles triangle = 50cm

18 + 18 + x = 50

36 + x = 50

x = 50 - 36

x = 14cm

Therefore, the third side of isosceles triangle = 14cm .