Question

the volume of a sphere is 38808cm3.find its radius and its surface area

Answer 1

⭐hey dear
volume of sphere = 4/3 pi. r^3 
38808 = 4/3 x 22/7 x r^3 
11 x 3528 = 4/3 x 22/7 x r^3
3528 =4/3 x 2/7 x r^3
4 x 882 = 4/3 x 2/7 x r^3
882 = 2/21 x r^3 
r^3 = 882 x 21 /2 = 441 x 21 
= 21 x 21 x 21

hence ,
r = 21 cm
now,
surface area = 4 pi. r^2
= 4 x 22/7 x 21 x 21 
= 4 x 22 x 3 x21
= 88 x 63 =5544 cm^2.
hope it help's☺☺

Answer 2

that's how it is all done