how would you do this question?

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#1
How would you do this?
Last edited by Fifty345; 1 month ago
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1 month ago
#2
(Original post by Fifty345)
How would you do this?

Attachment 977888
Just work out each area. What problem are you having?
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#3
(Original post by mqb2766)
Just work out each area. What problem are you having?
how would you work out the area for ABC? 1/2absincC?
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1 month ago
#4
(Original post by Fifty345)
how would you work out the area for ABC? 1/2absincC?
Sort of, angle CAB is easy so do the area sin calc using that
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#5
(Original post by mqb2766)
Sort of, angle CAB is easy so do the area sin calc using that
k.
Last edited by Fifty345; 1 month ago
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1 month ago
#6
(Original post by Fifty345)
can you check if this is correct please?

for abc, angle a is 30 degrees because isosceles .You do 1/2absinC which is 1/2 x 10 x 10 x sin 30 = 25cm^2.
for ade, (10 + 12) x 5 and divide that by 2 = 55cm^2.

Ratio: 25:55
simplified to 1:2.2
Yes.
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#7
(Original post by mqb2766)
Yes.
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1 month ago
#8
(Original post by Fifty345)
There was a good reflection I was going to make about the answer, but as you've deleted the image/question, I'll leave it.
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#9
(Original post by mqb2766)
There was a good reflection I was going to make about the answer, but as you've deleted the image/question, I'll leave it.
Apologies, I would really like to know. I deleted it incase for copyright reasons. Would you want me to repost the image?
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1 month ago
#10
(Original post by Fifty345)
Apologies, I would really like to know. I deleted it incase for copyright reasons. Would you want me to repost the image?
There are several reasons why people delete the question, sometimes it's because it's homework etc. I doubt that you'd have a problem with copyright for a question snippet.

As you've done this on another thread as well and it looks to be an exam question, I'd appreciate knowing which one it is - preferably a link.
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