The formula for the total surface area of closed hemisphere for any value of R is S=

The formula for the total surface area of closed hemisphere for any value of R is S = 3πR²

Step-by-step 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

70,000 + 6,000 + 800 + 30

step-by-step explanation:

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.