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Vlad1618 [11]
3 years ago
8

Perimeter of a triangle is 27cm,if two sides measure 9cm and 7.8cm,find the measure of third side?

Mathematics
1 answer:
fredd [130]3 years ago
8 0

Answer:

10.2cm

Step-by-step explanation:

Perimeter is the sum of the lengths of all sides.

1st side: 9cm

2nd side: 7.8cm

Perimeter: 27cm

Perimeter = 1st + 2nd +3rd side of a triangle

27cm = 9cm +7.8cm + 3rd side

3rd side = 27cm - 9cm -7.8cm

              = 10.2cm

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