Question

2 cubes each of volume 64 cm sqaure are joined end to end . find the surface area of the resulting cuboid ?

Answer 1

Answer:

160

Step-by-step explanation:

volume of a cube is a³

side of a cube will be

a³=64

a=4

when two cubes are joined we will get length as 8(4+4)

the width and the breadth will be 4 each

SA of cuboid=2(lb+lw+wb)

2(32+32+16)

2(80)

160

Answer 2

Answer:160

Step-by-step explanation:since, the volume of both cube is given i.e. each 64cm3.

so, we know that the volume of the cube= a3

so, a3= 64

a = 4,

therefore, the length, breadth,&height of the resultant cuboid are as follows,

length= 4+4= 8

breadth= 4&,

height= 4

now by putting these values in the formula of surface area of the resultant cuboid we get,

S.A. of resultant cuboid= 2(lb+bh+lh)

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

=2(32+16+32)

= 2(80)

=160