1236inch (5191.2cm)
primeter of a triangle = sum of its threee sides
P.S. 1 inch=4.2 cm
Answer:
I can only answer when it is written with pencil
Mean = (18 + 21 + 17 + 24 + 15) divided by 5
Mean = 95 divided by 5
Mean = 19
Answer:
X=6
see attachment
not all properties listed is needed to solve the question