When broken open Austen's jawbreaker will make a hemisphere.
Recall that the total surface area of a hemisphere is given by
Where r is the radius of the hemisphere.
We are given the diameter of the hemisphere that is 16.4 inches.
The radius is half of the diameter.
So, the radius is 8.2 inches
Substitute the radius into the above formula of total surface area
Therefore, the total surface area of the hemisphere is 633.72 square inches.
Please note that if you want to find out only the curved surface area then use the following formula
For the given case, the curved surface area is 453.96 square inches.