Question

Two sides of a triangle are 15cm and 20cm the perimeter of a triangle is 50cm what is the third side

Answer 1

Given:

Two sides of a triangle are 15 cm and 20 cm the perimeter of a triangle is 50cm

To find:

The third side

Solution:

We know,

$\boxed{\bold{Perimeter \:of\:a\:triangle = Sum \:of\:all\:3\:sides }}}$

Considering ABC as the triangle, we have

AB = 15 cm

BC = 20 cm

So,

Perimeter of the triangle = AB + BC + AC

i.e., AB + BC + AC = 50 cm

⇒ 15 + 20 + AC = 50

⇒ 35 + AC = 50

⇒ AC = 15 cm

Thus, the third side of the triangle is → 15 cm.

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Answer 2

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