# Question 4 explain how u got it ?

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- KrishnamurthyLv 71 month ago
The area of the shaded part of each figure:

a)

8.4^2 - 4.2^2 pi = 15.1423055907 m^2

b)

9 pi cm^2 = 28.2743339 cm^2

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- Mark IXLv 71 month ago
You know how to work out the area of a square (l x d) and you know how to work out the area of a circle (pi x r2). Simply remove the area of the circle from the area of the square.

Hint: the radius is half the diameter.

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- rotchmLv 71 month agoReport
Whats the area of the square? Answer that & we will continue.

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