Sorry. Here are the full questions. Please help and explain. An iron cube measures 10cm X 10cm X 10cm. What is its volume?

If the same iron cube has a mass of 7.9kg, what is its density in g/cm^3 (cubed)?

The distance between the two “x”s is approximately?
A. 1 km
B. 3mm
C. 5cm
D. 8kg
E. 13 ml

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.