Given:

To show that,

First box:

Below box to the first box:

Second box:

Below box to the second box:

Third box in the second row:

Last box:
So, using ASA congruence axiom,
Answer:
i go with 55
Step-by-step explanation:
the answer is 12 because half of the sphere is 6 unit and the other half is 6 unit then you just add them and you get 12 units