Question

Two cubes of each volume 64cm sq are joined end to end together find the surface area of resulting cuboid ​

Answer 1

volume of each cube is 64

let a be the side of cube

so it's volume is a^3=64

a=4

if we join end to end then it's length is 8 breath is 4 and height is 4

surface area is 2(lb+bh+hl)

2(8*4+4*4+4*8)

2(32+16+32)

160 is the answer of this question

Answer 2

Answer:

128

Step-by-step explanation:

Let the volume of each cube=64

let each side of cube=4

when the two cubes are joined it results a cuboid of length 8cm

surface area of cuboid=2(lb+bh+hl)

=2(8×4+4×4+4×4)

=2(64)

=128