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?

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Answer 1 · 2016-08-09T19:51:21

#=8pi(x+8)#

Area of the Circle#=pir^2#
Area of the washer
#=pi((x+10)^2-(x+6)^2)#
#=pi(x+10+x+6)(x+10-x-6)#
#=pi(2x+16)(10-6)#
#=8pi(x+8)#