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Maths mensuration

Hello everyone , I've a question regarding finding area of a shape .I'll try to upload image.

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Reply 1
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abdullahAK
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14
I am unable to upload the picture because the options are not appearing.
Original post by abdullahAK
I am unable to upload the picture because the options are not appearing.


Use https://imgur.com/upload
Reply 3
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abdullahAK
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14
There you go ,This is the question.
Capture````````.PNG36.9KB
Original post by abdullahAK
There you go ,This is the question.


The shaded area involves the entire triangle (shaded green), and two sectors of the circle (shaded red):




So for the total shaded area, you just add the three areas here.

Firstly, the triangle area then. Are you able to determine what it is?
Reply 5
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abdullahAK
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14
I've a question is the shaded region sector?
Original post by abdullahAK
I've a question is the shaded region sector?


You're gonna need to rephrase that question because it's not coherent.
Reply 7
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abdullahAK
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14
Is OAB a sector?
Original post by abdullahAK
Is OAB a sector?


Nope, because AB is not an arc of the circle... it's a straight line.
Reply 9
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abdullahAK
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14
Hmm.So,it means the other two shapes are sector because the their lines are connected to arc.
Original post by abdullahAK
Hmm.So,it means the other two shapes are sector because the their lines are connected to arc.


Yes... I've said that in post #5.
Appreciate your help. :smile:
Can’t be the only one who thought the title said Maths Menstruation
could you please solve this as well.
Capture''111111.PNG31.2KB
Original post by abdullahAK
could you please solve this as well.


First of all... there is no question there.

Secondly, have a go yourself first and post any thoughts. This isn't a "do my maths for me" site :smile:
Original post by TheNamesBond.
Can’t be the only one who thought the title said Maths Menstruation

yes you're right,It involves formulas which are taught in mensuration chapter.
The question are:
1) CAM
2)DCM.
And what you said is totally correct,But today I had a maths test and this question was included in the test,I tried a lot,however couldn't get it right.
That is why,I asked you about it.
Original post by abdullahAK
The question are:
1) CAM
2)DCM.
And what you said is totally correct,But today I had a maths test and this question was included in the test,I tried a lot,however couldn't get it right.
That is why,I asked you about it.


For CAM, you can first of all state what the blue angle is. Hence determine what the green angle is. Hence determine what the red angle is.

how can i find the blue angle?
Original post by abdullahAK
how can i find the blue angle?


Use the fact that we have a right-angled triangle here (purple):

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