Question

What is a lenght if the third side of traingle if one side measures 10 cm and the other side 15 cm and the perimeter is 45​

Answer 1

Answer:

10 cm

Step-by-step explanation:

let's take the unknown side as 'a'

perimeter is the sum of all the sides

so,

10 + 15 + a = 45

35 + a = 45

a = 45 - 35

a = 10

therefore the length of the third side is 10cm.