Contents
Radian & Degree
Arc Length
Area of Sector
Quiz
Geometry Main Page
Radian Measure
The figure shows a semicircle of radius 5cm with centre O. The radius OC makes an angle of /3 with OA. An arc CD of a circle is drawn with centre B and radius BC, intersecting BA at D.
(i) Find the area of the region ACD
(ii) Find the perimeter of the region ACD.
Answers
The figure shows a semicircle of radius 5cm with centre O. The radius OC makes
an angle of /3 with OA. An arc CD of a circle is drawn with centre
B and radius BC, intersecting BA at D.
