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Maths Puzzle
Two cubes each with side b are joined to form a cuboids. What is the surface area of this cuboids?
(a)12b^2 (b)10b^2 (c)6b^2 (d)4b^2
Read Solution (Total 3)
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- ans is 10 b^2
l=2b; b=b; h=b;
surface area=2*(lb+bh+hl)
=2*(2b^2+b^2+2b^2)
=10 b^2 - 13 years agoHelpfull: Yes(3) No(0)
- (b)10b^2
surface area of each cube = 6b^2
when joined surface area = 6b^2 + 6b^2 - 2b^2
so surface area of cuboid = 10b^2 - 13 years agoHelpfull: Yes(2) No(0)
- (b)10b^2
surface area of each cube = 6b^2
when joined then surface area = 6b^2 + 6b^2 - 2b^2
so surface area of cuboid = 10b^2 - 13 years agoHelpfull: Yes(2) No(0)
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