Question

the perimeter of triangle ABC is 100cm. its sides are 30cm,25cm and (x+5). fond the value of x

Answer 1

Perimeter of a triangle = 30+25+x+5=100
= x=40

Answer 2

perimeter of triangle=100cm
perimeter=sum of all sides
therefore
30+25+x+5=100
60+x=100
x=100-60
x=40cm