find out area of circle of radius is 6.3 by divinding the circle into 32 sectors

Answer 1

how will that help?
if you don't know how to find the area of a sector, you still won't know the area of the circle.

However, you can make a pretty good approximation if you know how to find the area of a triangle. The 32 sectors are very close to triangular in shape, have a height which is the radius of the circle, and a base which is 1/32 the circumference.