1. It’s a cube so l^3 =4*4*4 = 64
2. It’s formula should be l*b*h so just multiply all numbers
3. Use Pythagoras theorem first and then find area of the prism it’s just base area into height .
4. Use pi r^2 h so cut 6 into 3 for r which is radius
5 . Same it’s also a cylinder as question 4 .
These are very simple questions .