Question

1 B Solve.
(1) The radius of a sphere is R. Find the ratio of its surface area to
the area of a circle of the same radius.​

Answer 1

hey mate here is ur answer....

let radius of sphere and circle=R

so, area of sphere =4πR²

area of circle=2πR²

ratio

area of sphere : area of circle

4πR²:2πR²

2:1

hence ratio of their surface area is 2:1

hope it helps u mate...

mark my answer as brainlist

Answer 2

Answer:

4 : 1

Step-by-step explanation:

4πr² : πr² = 4 : 1