GCSE Maths Help and Chat Thread

Yes that's correct.

It's useful for questions with diagrams to check if your answer makes sense (although be careful since diagrams aren't always drawn to scale) : AB looks like it's a similar length to EF so the answer 8.2 looks fine.

If for example you got something like 20cm for EF then this would seem a bit odd so it would be worth double checking your working to see if you made a mistake.

Hey can I get a bit of help in answering this question?

Please post your working out or your initial thoughts, even if it's just 'I don't know'. With Maths, you learn more by attempting stuff and going 'okay I understand his bit, but not sure where to go from here' etc.

I have no where to start, all I know the radius is root two

Hey can I get a bit of help in answering this question?

Here's a way you could start: connect the centres of the four smaller circles. What shape do you get?

you get a square with side lengths 2 root 2

Make the diagonal of that square, what is it's length?

why is it x x 16(x 16) 5 though i have the same question and im ab it confused

I had this question for my term test. Okay so we need to find out how much rain there was in January but we don't know so let rain of January be "x".
In february there was 16mm more rain so the expression would be x+16
In march there was 5mm more rain than in February so the expression would be (x+16)+5.
Then we know that the total amount of rain was 172 so add all the expressions together..
x+x+16+(x+16)+5 = 172
Then rearrange for x and then u would have the answer!
No ratios needed xD!

It's hard to know what you're talking about. What was the original question?

im doing the same question and i'm a bit confused why is it x+x+16+(x+16)+5