Madz178
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OBC is a sector of a circle with centre o and radius 9cm . A and D are points respectively on OB and OC such that triangle OAD is equilateral with sides 4cm . work out the area of the shaded region as a percentage of the area of the sector OBC
- if any would like to help me i would really appreciate it and if you would like picture of this then plz message me in this thread
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mqb2766
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(Original post by Madz178)
OBC is a sector of a circle with centre o and radius 9cm . A and D are points respectively on OB and OC such that triangle OAD is equilateral with sides 4cm . work out the area of the shaded region as a percentage of the area of the sector OBC
- if any would like to help me i would really appreciate it and if you would like picture of this then plz message me in this thread
Just post the pic in the thread pls? What have you done so far?
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Melvin Guna
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(Original post by Madz178)
OBC is a sector of a circle with centre o and radius 9cm . A and D are points respectively on OB and OC such that triangle OAD is equilateral with sides 4cm . work out the area of the shaded region as a percentage of the area of the sector OBC
- if any would like to help me i would really appreciate it and if you would like picture of this then plz message me in this thread
which is the shaded region?
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Madz178
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(Original post by mqb2766)
Just post the pic in the thread pls? What have you done so far?
here it is
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Melvin Guna
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(Original post by Madz178)
here it is
you have the right idea - here is the approach for a percentage - I didn't check your calculations

Name:  sector_1.jpg
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Last edited by Melvin Guna; 1 month ago
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Madz178
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thanks for your help. i understand now. thanks again
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RogerOxon
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(Original post by Madz178)
here it is
Correct so far.
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