Diagram 5 shows a wire frame.The length of the wire is 60 cm and the radius of the semicircle is
(i)show that the area of the frame, is given by
(ii)Hence,calculate the maximum area of the frame
In the problem length of the wire l = 60 cm is given. Substitute this value in the first equation, rearrange the terms so that the equation should be
h = .............?