Your Practice Set – Applications and Interpretation for IBDP Mathematics
3 . The following diagram shows a circle with centre O .
The points A , B , C and D are on the circumference of the circle such that AOC ˆ
2
� 1.93 rad and the area of the sector OABC is 603 cm .
( a ) Find the length of OC .
( b ) ( i ) Find the reflex AÔC .
( ii ) Hence , find the area of sector OADC .
[ 2 ]
[ 4 ]
4 . The following diagram shows a circle with centre O and radius 4.5 cm .
The points A , B , C and D are on the circumference of the circle such that the length of the arc ABC is 4.32 cm .
( a ) Find the value of � , giving the answer in radians .
( b ) ( i ) Find the reflex AÔC .
( ii ) Hence , find the area of sector OADC .
[ 2 ]
[ 4 ]
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