The diameter of a sphere is 4.24m. Calculate its surface area with due regard to significant figures.

The diameter of a sphere is 4.24m. Calculate its surface area with due

1.	The diameter of a sphere is 4.24m. Calculate its surface area with due regard to significant figures.
Answer» Solution :Deameter `d=4.24m` RADIUS`r=d/2=(4.24)/2=2.12` surface area of SPHERE `=4pir^(2)=4xx3.1428xx2.12xx2.12` In the above multiplication `2.12`has 3 significant figures. It becomes `3.143`. Surface area `=4xx3.143xx2.12xx2.12=56.50` `56.50` this to be rounded off to have 3 significant figures. `:".Area is" 56.5`