Answer:
C.
Step-by-step explanation:

Each class had 3.5 gallons of paint to paint with and 3 classes used 10.5 gallons of paint
Answer:
113.143 cm²
Step-by-step explanation:
Radius=diameter/2=12/2=6 cm
Now
Area of a circle=πr²
=(3.16)(6)²
=(3.16)(36)
=113.143 cm²