Answer:

P=a+b+c

P= 10.5cm + 12.8 cm +14.15cm

P= 37.45

Answer:

P= 37.45

Step-by-step explanation:

Perimeter of triangle formula is

P=a+b+c

if a is 10.5 cm, b is 12.8 cm and c is 14.15 cm

P=10.5+12.8+14.15

P= 37.45

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