It’s c I just took that quiz
Answer:
55.3896
Step-by-step explanation:
A = πr²
A = 3.14 × 4.2²
A = 55.3896
So firstly, add both sides by 6: 
Next, multiply both sides by 4, and your answer will be 
Answer:
The volume of a right cylinder is equal to the 3 times of the volume of a right circular cone.
Step-by-step explanation:
Given that,
The volume of a right circular cone is 300 cubic inches
We need to find the volume of a right cylinder that has the same base and height as the cone.
Volume of a cone is given by :

And volume of a cylinder is given by :

If the base and height of cone and cylinder are same, r=r' and h=h'

So, the volume of a right cylinder is equal to the 3 times of the volume of a right circular cone.
Answer:
Step-by-step explanation:
it is c hope this helps