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Maths Help!

  • 08-01-2016 09:44PM
    #1
    Registered Users, Registered Users 2 Posts: 192 ✭✭


    Hi can someone help me with this?

    It's part 2, find the area. I got 62.5cm squared and the book got 68cm squared.

    Thanks :D


Comments

  • Registered Users, Registered Users 2 Posts: 430 ✭✭emersyn


    I've gotten 62.5 too, the back of the book may be wrong (let's hope so anyway)


  • Registered Users, Registered Users 2 Posts: 49 sdio


    I got 68: http://imgur.com/DnE2jkk

    Although the diagram's a bit misleading so I understand the confusion!


  • Registered Users, Registered Users 2 Posts: 192 ✭✭EireLemon


    sdio wrote: »
    I got 68: http://imgur.com/DnE2jkk

    Although the diagram's a bit misleading so I understand the confusion!

    I thought the entire bottom of the shape was 13, including the triangle on the left, when it's actually 14 :confused:. Thanks for your help :pac:


  • Closed Accounts Posts: 11,810 ✭✭✭✭evolving_doors


    It's a bit ambiguous though!

    Are we to assume the length 7 is parallel to 13?
    Are we to assume that from the left hand side of the 13 that it's a perpendicular height up to the 3 line?

    or is it the dotted line that's perpendicular?


  • Registered Users, Registered Users 2 Posts: 503 ✭✭✭Brendan97


    You got it wrong because the bit that you wrote in is incorrect (the 1cm is meant to be 2cm)


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  • Registered Users, Registered Users 2 Posts: 192 ✭✭EireLemon


    Brendan97 wrote: »
    You got it wrong because the bit that you wrote in is incorrect (the 1cm is meant to be 2cm)

    Yeah, because I thought that the entire bottom of the shape was 13cm instead of 14cm


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