Question

two cubes each of volume 64cm³ are joined end to end. find the surface area of resulting cuboid?​

Answer 1

Answer:

volume of cube=a^3

cubic root of 64=a

a=4cm

new dimensions of the two cubes joined will become a cuboid of dimension 4×8×4

surface area = 2 (lb+bh+hl)

= 2 (4×8+8×4+4×4)

= 2 (32+32+16)

= 2 (80)

= 160 sq. cm

Answer 2

Answer:

l=8cm

B=4cm

h=4cm

Surface Area of cuboid =2(LB+BH+HL)

=2(8×4+4×4+4×8)

=2(32+16+32)

=2×80

Surface Area of cuboid =160cm²