Volume of a cube is a side length cubed
So 7*7*7
Answer is 343 centimeters
The standard form of the equation of a circle is:

Where the point (a,b) represents the centre and r is the radius. So, given your information, the equation will be:
Solve for k by simplifying both sides of the equation, then isolating the variable.
k= 14/5
-0.85, 0.25, 60, 60 2/40
hope this helps! :)