if an ant walk 19cm in minute how far does it walk if the perimeter is 3m by 4m.
Do you mean how long it will take for it to walk that perimeter?
First, find the total length of the perimeter:
I'm assuming it is a rectangle/parallelogram.
So there will be two sides with the length of 3m, and two sides with the length of 4m.
The perimeter would be:
P=2(3) + 2(4)
P=6+8
P=14
This is in meters, and one meter equals 100 centimeters.
To find 14 meters in centimeters, multiply it by 100.
That would be 14000 cm.
Now, you can use a ratio to find the time:
19cm/1=14000/x
+5478 
