A machinist creates a washer by drilling a hole through the center of a circular piece of metal. If the piece of metal has a radius of x + 10 and the hole has a radius of x + 6, what is the area of the washer?

Question

anonymous · Answer

@zepdrix  My apologies for bothering you, but I must ask for a moment of your time.

irishboy123 · Answer

you know the formula for area of a circle, so:

1) calculate Area of piece of metal : $A_m$

2) calculate Area of the Hole : $A_h$

3) then washer Area = $A_m - A_h$