All edges of a cube are expanding at a rate of 3 cm/'sec. How fast is the volume changing when each edge of cube is 10 cm? How fast is the surface

All edges of a cube are expanding at a rate of 3 cm/'sec. How fast is the volume changing when each edge of cube is 10 cm? How fast is the surface area of the cube changing at this instant? 

Explain your answer and draw a picture for this question.