Find the cloth required for constructing a conical tent of height 6m such that a person of height 2 metre can stand at a distance of 4m from the centre of the base.
show that the relation R on Z defined by R={(a,b):|a-b| is even} is an equivalence relation
12 class ncert maths exercise 6.5 in Hindi questions no 24 se 26 tak
12 class ncert maths exercise 6.5 in Hindi questions no 24 se 26 tak