The figure below is made up of 2 identical big semi-circles and 3 identical small semi-circles.

(a)
Find the perimeter of the shaded figure.

(Take $\pi = 3.14$ )

Answer: (a) ___
(b)
Find the total area of the shaded parts.

(Take $\pi = 3.14$ )

Answer: (b) ___

Circumference of a circle and pi Shaded areas with circles and sectors 中文

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