Question

The perimeter of a triangular lawn is 42cm. The first side is 5cm less than the second side, and the third side is 2cm less than the first. What is the length of each side of the lawn?

Answer 1

Step-by-step explanation:

let the second side be x

thefore first side is x-5

and

third side is x-5-2=x-7

perimeter of triangle= side one+side two+side

three

42= x+x- 5+x- 7

42=3x-12

42+12=3x

x=54/3

x=18

first side is 13 second is 18 third is11