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# Maths year 11 Watch

1. (Original post by RDKGames)
Pond + pond + patio is wrong. Work them out individually and add them up.
How's this?

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2. (Original post by z_o_e)
How's this?

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Correct. (You should really lay off so many decimal places lol, 2 or 3 are enough)
3. (Original post by RDKGames)
Correct. (You should really lay off so many decimal places lol, 2 or 3 are enough)
Hahaha I just find it easier to understand like this xx

What do I do after?

Is it 112.2/25

And then round it to the nearest whole?

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4. (Original post by z_o_e)
Hahaha I just find it easier to understand like this xx

What do I do after?

Is it 112.2/25

And then round it to the nearest whole?

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Yes that should give you the minimum amount of boxes you need. After you get the number, think whether you round to the nearest whole, will that number be enough for all the grass as the person wishes?
5. (Original post by RDKGames)
Yes that should give you the minimum amount of boxes you need. After you get the number, think whether you round to the nearest whole, will that number be enough for all the grass as the person wishes?
It's not enough..
As he got 4.488

Therefore he needs 5 boxes. But he doesn't have enough he only has 4boxes

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6. (Original post by z_o_e)
Heya, my end of year exam is coming up and I'm doing higher and I'm getting D's I'm currently in year 10 and I know I can do better if I revise. Is anyone else willing to help me with a few questions ?
Achieve maths on youtube is brilliant! They go through so many past papers, watch all the videos
7. (Original post by Crabber25)
Achieve maths on youtube is brilliant! They go through so many past papers, watch all the videos
Thankss x

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8. (Original post by z_o_e)
It's not enough..
As he got 4.488

Therefore he needs 5 boxes. But he doesn't have enough he only has 4boxes

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What do you mean by that last statement when you say he has only 4 boxes? The question asks how many boxes he needs. So your first 2 statements are correct, you can't round down because 4 is not enough therefore he must make do with 5 and keep the leftover fertiliser.
9. (Original post by RDKGames)
What do you mean by that last statement when you say he has only 4 boxes? The question asks how many boxes he needs. So your first 2 statements are correct, you can't round down because 4 is not enough therefore he must make do with 5 and keep the leftover fertiliser.
He can only use 4 fertilisers. Hahaha sorry about that x

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10. (Original post by z_o_e)
He can only use 4 fertilisers. Hahaha sorry about that x

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Doesn't specify anywhere in the question that the restriction is 4, so he can use 5 as that's the minimum needed. Anywho, you get the idea.
11. (Original post by RDKGames)
Doesn't specify anywhere in the question that the restriction is 4, so he can use 5 as that's the minimum needed. Anywho, you get the idea.
For this one should I find the interior and exterior angles?

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13. (Original post by z_o_e)
For this one should I find the interior and exterior angles?

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Personally I would find the interior angle, as we are told it is a 10-sided regular polygon (known as a decagon). We can label angle DCX as angle

So then we have the same situation as your previous questions, all these 3 angles around C add up to 360 and you know one of them so you can work out .
14. A valid method which I've mentioned above this post, however 144+90 is not 204
15. (Original post by RDKGames)
Personally I would find the interior angle, as we are told it is a 10-sided regular polygon (known as a decagon). We can label angle DCX as angle

So then we have the same situation as your previous questions, all these 3 angles around C add up to 360 and you know one of them so you can work out .

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16. You can extend the line too if you wish and work with that, though I wouldn't bother personally. The interior angle will be made up from the 90 you've drawn on and the other angle. You can find that other angle and take it away from 180 to get the angle you need.
17. (Original post by RDKGames)
You can extend the line too if you wish and work with that, though I wouldn't bother personally. The interior angle will be made up from the 90 you've drawn on and the other angle. You can find that other angle and take it away from 180 to get the angle you need.
How do I find the other angle? :/

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18. (Original post by RDKGames)
You can extend the line too if you wish and work with that, though I wouldn't bother personally. The interior angle will be made up from the 90 you've drawn on and the other angle. You can find that other angle and take it away from 180 to get the angle you need.
Got it x

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19. Correct.
20. (Original post by RDKGames)
Correct.
Now angle d

Is 360-144

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Updated: December 10, 2016
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