Question

2 cubes each of volume 64 centimeter cube. Are joined end to end. Find the S.A. of cuboid that is formed

Answer 1

Hii There!!!

Given:- Volume of cube = 64cm3

=) (edge)3 = 64 cm3. [since, vol. of cube= (edge)3]

=) edge =4cm


If cubes are joined end to end then ;

=) length (l) = 4cm , breadth (b) = 4cm and height(h)= 8cm.



Since, S.A of cuboid = 2[ lb + bh + hl ]

=) 2[ 4×4 + 4×8 + 8×4]

=) 2[ 16 + 32 + 32 ]

=) 2[ 80]

=) 160 cm2


Hope it helps

Answer 2

Surface area= 2(lb+bh+hl)
put values in this formulae you will get that...