Question

19. Calculate the length of the boundary and the area of the shaded region in the
following diagrams. All measurements are in centimetres.
(1) Unshaded part is a semicircle
(ii) Four semicircles on a square. 28
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Answer 1

Answer:

19. Calculate the length of the boundary and the area of the shaded region in the

following diagrams. All measurements are in centimetres.

(1) Unshaded part is a semicircle

(ii) Four semicircles on a square. 28