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Question
secondary 3 | E Maths
3 Answers Below
Anyone can contribute an answer, even non-tutors.
Thank you in advance
Date Posted: 5 years ago
Views: 313
Will look at this question by 4 am
See 3 Answers
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Not so sure about this. I may be wrong.
Will look at this again when I return past 2 am.
Will look at this again when I return past 2 am.
Date Posted:
5 years ago
Sector —> segment*
Yeah I got the same answer, it is most probably correct
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Should be correct.
Date Posted:
5 years ago
It is correct. I have verified this by integration.
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Good afternoon!
I have used a higher level approach to verify that the area of the shaded region is indeed 25 cm2, but this method is not to be used at the Secondary 3 level.
The proper way to go at the Secondary 3 level is still to consider the area of a segment within a sector.
I would expect this question to be approximately 4 marks long in an O Level examination paper, the break-down of which is 1 mark for finding the radius, 2 marks for finding the area of the segment and 1 mark for finding the total area of the shaded regions.
I have used a higher level approach to verify that the area of the shaded region is indeed 25 cm2, but this method is not to be used at the Secondary 3 level.
The proper way to go at the Secondary 3 level is still to consider the area of a segment within a sector.
I would expect this question to be approximately 4 marks long in an O Level examination paper, the break-down of which is 1 mark for finding the radius, 2 marks for finding the area of the segment and 1 mark for finding the total area of the shaded regions.
Date Posted:
5 years ago
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