Two mobile phone masts P and Q are 30 km apart. Mast P has a radius of 20 km and Mast Q has a radius of 15 km.
a. Draw the locus of points covered by these two masts. Remember to give your scale.
b. Label the points where the two circles meet as L and M and draw lines PL,LQ,QM and MP.
c. What is the name given to the quadrilateral PLQM?
d. Shade in the locus of points that is covered by both masts.