Question

Solve the word problem
The perimeter of triangle is 75 cm. Two of the sides are 20 cm and 30 cm , find the third side . ​

Answer 1

let the sides by a b and c

so,

a+b+c=75

2 sides are given

a + 20+30=75

a=75-50

a=25

third side 25cm

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Answer 2

Answer:

let the third side be x ......

perimeter of triangle is 75.

so 20+30+x=75

50+x=75

x=75-50

x=25..