Question

Two sides of a triangle measure 20 cm and 40 cm
The perimeter is 100 cm. How long is the third side
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Answer 1

Answer:

The third side is 40 cm

Step-by-step explanation:

Perimeter = sum of all sides

100 cm = 40 + 20 + x

Where x is the third side

x = 100-60

x = 40 cm