if there are 5 semi circles, joining two of them twice, therefore using 4 halves to make 2 whole circles, leaving a semi circle, adding the measurements given will give the diameter of 3 circles.
22+12+16+12+22= 84. 84cm is the total diameter of the 2 circles as well as the diameter of the semi circles, the semi circles are equal therefore the circles will be equal. divide 84cm by 3 gives 28cm, the diameter of each circle and semi circles. use formulas for area of circle and semi circles:
A = pi•r•r + pi•r•r + (1/2)•pi•r•r
A = pi•28•28 + pi•28•28 + pi•0.5•28•28
A=3684