Question

8.
1 mark
The perimeter of a triangle is
60cm.Two of its sides measure 20cm
and 12 cm .What is the length of the
third side?​

Answer 1

Answer:

let the third side be x

20+12+x=60

x=60-32

x=28

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Answer 2

Step-by-step explanation:

The formula for finding the perimeter of a triangle is P=a+b+c where a,b, and c are the sides of the triangle. In this case, we can set a=18 and b=20 for the given lengths and let c represent the third side. Inserting the given values to the perimeter of a triangle formula and solving for c :

So the length of the third side of the triangle is 22 cm.