6th Class Mathematics Sample Paper Mathematics Sample Paper-4

  • question_answer Perimeter of an isosceles triangle is 50 cm. If one of the two equal sides is 18 cm, find the third side.

    Answer:

    Given, perimeter = 50 cm
    Perimeter of an isosceles triangle = sum of its all side
    \[\Rightarrow \]   Perimeter \[=a+b+c\]
    \[\Rightarrow \]   \[50=18+18+\text{ }Third\text{ }side\]
    \[\Rightarrow \]   \[5036=\text{ }Third\text{ }side\]
    \[\Rightarrow \]   Third side = 14 cm.


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