Question

The total surface area of sphere is how much times the square of its
radius
b) 2π
c) π
d) 4π
a) 3π​

Answer 1

Step-by-step explanation:

The area of a circle of radius r is πr2 and thus if the hemisphere is meant to include the base then the surface area is 2πr2+πr2=3πr2.

Answer 2

Answer:

d) 4π is the correct answer.