Question

Three cubes of side 10cm each are joined end to end to make a cuboid . Find the surface a
rea of resulting solid

Answer 1

hi there,
h=10,
l=3*10=30
b=3*10=30
surface area =2lb+2bh+2lh=1800+600+600=3000cm^2
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Answer 2

They are three cubes
So,
Length = 30 cm
Breadth = 10 cm
Height = 10 cm
TSA = 2(lb+bh+hl) = 2(300+100+300) = 2(700) = 1400 cm²