Faman39
Please help me!!!!!!
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Faman39
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latremese40
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i think 650
Faman39
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Thank you
latremese40
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ur welcome
Faman39
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@satellite73, @Sufiyancs what do u guys think?
Faman39
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I just need to understand, how will i get this ?
Sufiyancs
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surface are of cuboid = 2(l*b)+2(bh)+2(l*h)
so just divide the figure into 2 parts
Sufiyancs
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therefore, surface area of 1 cuboid = 2(10*5)+2(5*5)+2(10*5)
Sufiyancs
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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
Sufiyancs
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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
Sufiyancs
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if u dont get the last part divide the figure into 3 parts
Faman39
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Thank you so much guys for helping :) thanks alot @Sufiyancs !!! you guys are truly awesome!!!!!!
Sufiyancs
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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
Faman39
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Oh ok :) thank you so much!
Sufiyancs
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i have divided it into 3 parts as i said before
Sufiyancs
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anytime