Final answer:
The total surface area of a hemisphere can be calculated using the formula A = 2πr^2 + πr^2, where r is the radius of the hemisphere.
Step-by-step explanation:
The total surface area of a hemisphere can be calculated using the formula A = 2πr2 + πr2, where r is the radius of the hemisphere. Since the hemisphere is half of a sphere, we can ignore the curved surface area and only consider the area of the flat base, which is a circle. So, the total surface area of hemisphere A would be the area of the circle, which is πr2 multiplied by 2.
Given the information provided, we need to know the value of r to calculate the surface area of hemisphere A.