Question

the semi perimeter of a triangle is 22 cm if two of its sides are 20 cm and 15 cm then find its 3rd side​

Answer 1

Answer:

Length of 3rd side = 9cm//

Step-by-step explanation:

Let the sides be A, B and C respectively.

Given,

A = 20cm

B = 15cm

$\frac{1}{2} ( A + B + C ) = 22 cm$

A + B + C = 44cm

20 + 15 + C = 44cm

C = 44 - 20 - 15

   = 9cm//

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MARK AS BRAINLIEST :)