Question

A trianfle has a perimeter of 60cm If its two sides are of length 18cm and 20 cm what is the length of the third side?

Answer 1

22 cm because perimeter is all the sides added together.

18+20=38

60-38=22 cm

Answer 2

The perimeter is 60
Two sides of length = 18 and 20.
Then the length of third side will be
60- (18+20)= 22