Areas of sectors and segments | Did they get this wrong?

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GogetaORvegito?
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Am I right to say OR is 2.5cm because it is 1/4 of 10 and RQ is 7.5cm because it is 3/4 of 10. I looked at exam solutions and they made it the other way around which is obviously wrong?
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mqb2766
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(Original post by GogetaORvegito?)
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Am I right to say OR is 2.5cm because it is 1/4 of 10 and RQ is 7.5cm because it is 3/4 of 10. I looked at exam solutions and they made it the other way around which is obviously wrong?
What you've written sounds correct. Could you upload a pic of the m/s?
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GogetaORvegito?
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(Original post by mqb2766)
What you've written sounds correct. Could you upload a pic of the m/s?
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It looks like they made an error because in their final calculations for the perimeter they do use 7.5cm
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mqb2766
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(Original post by GogetaORvegito?)
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It looks like they made an error because in their final calculations for the perimeter they do use 7.5cm
It looks like it's the figure that's wrong. They use the right values in all the calcs?
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GogetaORvegito?
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(Original post by mqb2766)
It looks like it's the figure that's wrong. They use the right values in all the calcs?
Yeah the figure is wrong but in the final line you can see they were using 7.5
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mqb2766
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(Original post by GogetaORvegito?)
Yeah the figure is wrong but in the final line you can see they were using 7.5
So the calculations are correct. There is just a typo in the figure.
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