I hope this helps you
area formula=pi.r^2
1) Area=3,14. (3,5)^2
Area=38,465
Area nearest 38,5
2) Circumference=2pi.r
Circumference=2.3,14.3,5
Circumference=21,98
Circumference nearest 22
Answer:
D, E and F
calculating the volume of regular bodies like prims works by multiplication alone.
you need some addition for surface area and for more complicated bodies that when the volume can't be calculated in one step
The answer is B (20.2 ft)
Yes ,it is a contact force .Example when a ball touches de floor friction makes it go slow and makes it go up