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Perimeter of a triangle is 27 cm if two sides measure 9cm and7.8cm find the measure of third side

Sagot :

indrawboy

perimeter = sum of all sides

27 = 9+7.8+x

x (third side) = 10.2

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Answer:

10.2cm

Step-by-step explanation:

9+7.8= 16.8cm

27-16.8= 10.2 cm

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