Dear Math Guru,


Please help me with this question:

The figure below is made up of 3 circles with the same radius 10cm.
X, Y and Z are the centres of the circles respectively. For each of the following, use the calculator value of to find.

(a) the perimeter if the shaded parts, correct to 2 decimal places.

(b) the area of the shaded parts, correct to 2 decimal places.

http://www.oldschool.com.sg/modpub/1514566534f7163e3ddad9\">

Thanks!