What is the area of the shaded part?

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I need help finding the area of the shaded part. The answer has to have 2 decimal points.

1 Answer
sjc
May 7, 2018

#21.46cm^2(2dp)#

Explanation:

The shaded part is the area of the square minus the area of the circle

square#=10xx10=100cm^2#

circle#=pir^2#

diameter #=10cm#

#:.r=5cm#

circle#=pixx5^2#

circle#=25picm^2#

shaded part#=100-25pi#

#=21.46018366#

#=21.46cm^2(2dp)#

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