Answer:
The formula for the total surface area of closed hemisphere for any value of R is S = 3πR²
Explanation:
The total surface area of closed hemisphere is given as;
Curved surface area of the hemisphere + Base surface area of the hemisphere
Curved surface area of the hemisphere, A= 2πr²
Base surface area of the hemisphere, B = πr²
The total surface area of closed hemisphere, S = A + B
The total surface area of closed hemisphere, S = 2πr² + πr² = 3πr²
Therefore, The formula for the total surface area of closed hemisphere for any value of R is S = 3πR²