Question

Perimeter of a triangle is 49cm. One side of the triangle is 7cm longer than another side and 5cm shorter than the third side. Find the lengths of its sides.

Answer 1

Answer:

30

Step-by-step explanation:

Perimeter of triangle =side + side +side

given perimeter =49cm

So,

=> 49 = 7 + 5 + x(another side)

=> x = 30

Please mark it as brainliest.

Answer 2

Let the first side of the triangle be = x .

So,

ATQ ,

2nd side will be = x - 7

3rd side will be = x + 5.

We know that perimeter of triangle is equal to the sum of all of the three sides & given that perimeter of the triangle is 49cm.

So,

x + (x - 7) + (x + 5) = 49cm.

⟹ x + x - 7 + x + 5 = 49cm

⟹3x - 2 = 49cm

⟹3x = 51

⟹x = 51/3

⟹x = 17cm.

So length of sides will be:-

x,x-7,x+5

=17cm,10cm,22cm