Question

Two sides of a triangle are 5 cm and 12 cm. If perimeter is 30 cm, then the third side of 1
the triangle is:
(a) 17 cm (b) 15 cm (c) 13 cm (d) 20 cm​

Answer 1

Answer:

Perimeter = 1st + 2nd + 3rd sides

Le the 3rd side be x

30 = 5 + 12 + x

30 - 5 -12 = x

x = 13 cm ( Dont forget the unit)

Pls mark as the brainliest answer.

Answer 2

Answer:

Let the third side be x.

5cm + 12cm + x = 30 cm

x = 30 - 17

x = 13 cm