Rohan and Mina were brother and sister.They had a big garden where they planted lots of plants but there was a problem everyday a cow,goat used to come and eat the plants.
Rohan what should we do?Everyday a cow or a goat comes and eats our plants.
Let's go and ask grandpa.
Grandpa everday a cow or a goat comes and eats our plants what can we do to protect our plants
We can put a rectangular fence around the garden but how do we know how much fence we need
Oh the lenght of the garden is 16 m and breadth is 20 m.If we add 16+20 it is 36m now if we multiply it by 2v it becomes 72.We need 72m fence .