Answer:
C=5
Step-by-step explanation:
use the pythagorean theorem:

a= 3
b=4
c=5
answer is 35 .............
Answer:
12+12+10+10=44
104-44=60
60÷2=30
30 is the surface area of A
30÷6=5
5 is a missing dimention
Honestly I know it’s a negative so negative -1,5 for the first x and y