Question

pls help me to solve this​

Answer 1

1) If diameter = 28 so the radius = 28/2= 14

Area of circle = π*r²= 22/7*14*14 = 22/7*196= 616cm²

Area = 616cm²

Answer 2

Answer:

i) =2464 cm2. Therefore, the required surface area of the sphere is 2464 cm2

ii) I don't know the answer , Sorry