Question

2. The sides of a triangle are 3.7 cm and 4.5 cm. If its perimeter is 15 cm, find its third​

Answer 1

Answer:

perimeter equal to sum of 3 sides

let the 3rd side be x

15=3.7+4.5+x

15=8.2+x

15-8.2=x

6.8=x=3rd side

Answer 2

Answer:

6.8 cm

Explanation:

perimeter of a triangle = sum of all sides= a+b+c

15=3.7+4.5+c

15= 8.2+c

15-8.2=c

Therefore, c=6.8 cm