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25 February, 02:29

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

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Answers (1)
  1. 25 February, 03:05
    0
    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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