Answer:
c=3
Step-by-step explanation:
do u need the explanation?
C=3
12c-4=14c-10 <em>Given</em>
6=2c <em>Add 10 and subtract 12 from both sides</em>
c=3 <em>Divide by 2 to isolate the c</em>
hope its helps
total area = 99m² + 39.4m²
= 138.4m²