Guangzhou Circle is a circular building in Guangzhou, China designed by Italian architect Joseph di Pasquale. The building’s height is 138 meters (m)138 ������ (�) and it has a diameter of 388m �. Guangzhou Circle has a circular hole at its center that is open with views of the Zhujiang River. The diameter of the circular hole is 96m �. A diagram
of the building is shown where the smaller circle represents the circular hole, GL¯¯¯¯¯��¯ is the radius of the circular hole, HP¯¯¯¯¯¯��¯ is height of the building, and RY¯¯¯¯¯��¯ is a diameter of the building.
Part a: determine the area in sq meters, of the sector Lm if m
Part B: The part of the building that rests on the ground is not circular. In the diagram circle g represents the Guangzhou circle and WK if m
