# 4. GCSE Maths

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need help with this questions please

Last edited by Madz178; 3 weeks ago

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(Original post by

What have you done so far?

**mqb2766**)What have you done so far?

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#4

(Original post by

hi so i haven't done anything but what i am thinking is that i should find the area of each shape then add it up - divide by thirty and that's all i've got

**Madz178**)hi so i haven't done anything but what i am thinking is that i should find the area of each shape then add it up - divide by thirty and that's all i've got

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(Original post by

Post your progress if / when you have a problem then

**mqb2766**)Post your progress if / when you have a problem then

semicircle =508.94 x 3=1526.82

1526.82+1296/30= 94.094

but i don't know what i actally worked out and what i should do to find the cost

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#6

(Original post by

square- 36^2=1296

semicircle =508.94 x 3=1526.82

1526.82+1296/30= 94.094

but i don't know what i actally worked out and what i should do to find the cost

**Madz178**)square- 36^2=1296

semicircle =508.94 x 3=1526.82

1526.82+1296/30= 94.094

but i don't know what i actally worked out and what i should do to find the cost

Then work out the number of bags needed to get that mass.

Your area sounds about right, but not sure what the 94 represents.

Last edited by mqb2766; 3 weeks ago

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(Original post by

You know the area, so you can work out the mass you need.

Then work out the number of bags needed to get that mass.

Your area sounds about right, but not sure what the 94 represents.

**mqb2766**)You know the area, so you can work out the mass you need.

Then work out the number of bags needed to get that mass.

Your area sounds about right, but not sure what the 94 represents.

understand how i should do that could you explain please??

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#8

1 m^2 ...

2 m^2 ...

3 m^2 ...

...

Guess you can spot/understand what to do?

Then work out the number of bags?

Last edited by mqb2766; 3 weeks ago

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(Original post by

How much (mass) would you need for

1 m^2 ...

2 m^2 ...

3 m^2 ...

...

Guess you can spot/understand what to do?

Then work out the number of bags?

**mqb2766**)How much (mass) would you need for

1 m^2 ...

2 m^2 ...

3 m^2 ...

...

Guess you can spot/understand what to do?

Then work out the number of bags?

then what i did is i conveted 10 kg into g= 100000 then divided by 30=333.33 recurring then i dvided by 30 it so i think i worked out that for a so buy a one 10kg bag the square metre has to be 11

so would i do 94/11 then multiplied it by the cost f the 10kg bags???

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#10

(Original post by

so it doubles 1=30 2=60 3=90

then what i did is i conveted 10 kg into g= 100000 then divided by 30=333.33 recurring then i dvided by 30 it so i think i worked out that for a so buy a one 10kg bag the square metre has to be 11

so would i do 94/11 then multiplied it by the cost f the 10kg bags???

**Madz178**)so it doubles 1=30 2=60 3=90

then what i did is i conveted 10 kg into g= 100000 then divided by 30=333.33 recurring then i dvided by 30 it so i think i worked out that for a so buy a one 10kg bag the square metre has to be 11

so would i do 94/11 then multiplied it by the cost f the 10kg bags???

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(Original post by

I have no idea what you're describing. How much (in grams) is required for your area?

**mqb2766**)I have no idea what you're describing. How much (in grams) is required for your area?

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#12

You answered it for a simplified problem in the previous post. Use the actual area rather than the simple areas.

Last edited by mqb2766; 3 weeks ago

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(Original post by

You answered it for a simplified problem in the previous post. Use the actual area rather than the simple areas.

**mqb2766**)You answered it for a simplified problem in the previous post. Use the actual area rather than the simple areas.

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#14

(Original post by

i don't understand what your are trying to make me work out so the area is 2822.82 actual area then 30 g are needed for every square metre so you would divide it by 30 to get 94 so there are 94 square metre that need 30 g i think??

**Madz178**)i don't understand what your are trying to make me work out so the area is 2822.82 actual area then 30 g are needed for every square metre so you would divide it by 30 to get 94 so there are 94 square metre that need 30 g i think??

What does your 94 represent?

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(Original post by

How much for 1, 2, 3, 4, 5... square metres? How much (mass) for 2800 (approximately) square metres?

What does your 94 represent?

**mqb2766**)How much for 1, 2, 3, 4, 5... square metres? How much (mass) for 2800 (approximately) square metres?

What does your 94 represent?

i think the 94 is wrong

i think you do 2822.82 x 30=84684.6 so that's how much mass i think

then would i need to divide by 10,000 to find out how many bags apprximately and then multiply by cost

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#16

(Original post by

1 =30 2=60 3=90 4=120 5=150

i think the 94 is wrong

i think you do 2822.82 x 30=84684.6 so that's how much mass i think

then would i need to divide by 10,000 to find out how many bags apprximately and then multiply by cost

**Madz178**)1 =30 2=60 3=90 4=120 5=150

i think the 94 is wrong

i think you do 2822.82 x 30=84684.6 so that's how much mass i think

then would i need to divide by 10,000 to find out how many bags apprximately and then multiply by cost

Last edited by mqb2766; 3 weeks ago

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