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sumaiyah2000
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A rectangle measures 18cm by 10cm

Four identical quarter-circles are removed to leave a shaded region

Work out the shaded area

Give answer in pi

Verified Answer :

lets work it out in terms of the radius r

area of the 4 identical quatrer circles = pi r^2

So the area of the shaded region is  18*10 - pi r^2
                                                   = 180 - pi r^2

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