Answer:
Option A 
Step-by-step explanation:
we know that
The volume of a cone is equal to

In this problem we have

substitute the values


Answer:
12 D. Is the answer
Step-by-step explanation:
The equation we will use is
1
6
+
1
x
=
1
4
. Solve the equation by multiplying each term by the LCM of the denominator, 12x. The equation is now 2x + 12 = 3x. We solve and find x = 12. It will Marcus 12 hours to paint the room alone.
Answer:
46:74
Step-by-step explanation: