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Maths paper Calculator Question-help??

Question 8:
http://qualifications.pearson.com/content/dam/pdf/GCSE/Mathematics%20A/2010/Exam%20materials/1MA0_2H_que_20130614.pdf
I don't know how to split the shape to answer the question.
I have the mark scheme but it does'nt say how to go about answering the question.

Reply 1

jakeberg

It's pretty simple. Split the shape into a rectangle and a trapezium. Add their areas. Multiply this by the cost per m^2.

Reply 2

Muttley79

Original post by aliyahh16

I think the easiest way is to subtract the triangle from the big rectangle which is 80m by 60m.

(edited 8 years ago)

Reply 3

aliyahh16

Original post by jakeberg

It's pretty simple. Split the shape into a rectangle and a trapezium. Add their areas. Multiply this by the cost per m^2.

okay so i did that and i got 180 for the trapezium and 2400 for the rectangle
all together that's 2580

then i did 2580 x 2.56 (the cost) which gave me £6604.8

buuut that's wrong :frown:

march scheme says it's 10752

where did i go wrong?

Reply 4

aliyahh16

Original post by aliyahh16

okay so i did that and i got 180 for the trapezium and 2400 for the rectangle
all together that's 2580

then i did 2580 x 2.56 (the cost) which gave me £6604.8

buuut that's wrong :frown:

march scheme says it's 10752

where did i go wrong?