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Faman39

  • 2 years ago

Please help me!!!!!!

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  1. Faman39
    • 2 years ago
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  2. latremese40
    • 2 years ago
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    i think 650

  3. Faman39
    • 2 years ago
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    Thank you

  4. latremese40
    • 2 years ago
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    ur welcome

  5. Faman39
    • 2 years ago
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    @satellite73, @Sufiyancs what do u guys think?

  6. Faman39
    • 2 years ago
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    I just need to understand, how will i get this ?

  7. Sufiyancs
    • 2 years ago
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    surface are of cuboid = 2(l*b)+2(bh)+2(l*h) so just divide the figure into 2 parts

  8. Sufiyancs
    • 2 years ago
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    therefore, surface area of 1 cuboid = 2(10*5)+2(5*5)+2(10*5)

  9. Sufiyancs
    • 2 years ago
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    that is equal to 250 and then surface area of 2 cuboid = 2(20*5)+2(5*5)+2(20*5)=450

  10. Sufiyancs
    • 2 years ago
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    therefore total surface area is 250+450=700 But as i have counted one line twice just the one next to 15 so the actual answer is 700-50=650

  11. Sufiyancs
    • 2 years ago
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    if u dont get the last part divide the figure into 3 parts

  12. Faman39
    • 2 years ago
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    Thank you so much guys for helping :) thanks alot @Sufiyancs !!! you guys are truly awesome!!!!!!

  13. Sufiyancs
    • 2 years ago
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    ammm sorry its 750... this is how we do it.. 2(5*5)+2(5*5)+2(5*5)=150 2(10*5)+2(5*5)+2(10*5)=250 2(15*5)+2(5*5)+2(15*5)=350 Total surface area= 150+250+350 = 750cm Square

  14. Faman39
    • 2 years ago
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    Oh ok :) thank you so much!

  15. Sufiyancs
    • 2 years ago
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    i have divided it into 3 parts as i said before

  16. Sufiyancs
    • 2 years ago
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    anytime

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