Question

2 cubes each of volume 64 cm^3 are join end to end find the surface area of exerting 2 cuboid

Answer 1

Given Volume of both cubes = 64cm^3
find one side = (64)^1/3 = 4

The cubes are joined end to end
Length = 8cm 
width = 4cm
height= 4 cm

Surface area,
2(lb+bh+hl)
2(32+16+32)
160 cm^2
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Answer 2

Answer: 160cm².

Step by step explanation:

Given,

Volume of both cubes = 64cm³

Volume of one cube =a³

⇒ 64 = a³

⇒ (4) = a³

⇒ a=4

To find: We have to find the Surface area of resulting cuboids.

We know that, when two cubes are joined they form cuboid:

Length of cuboid=4+4= 8cm

Breadth of cuboid= 4cm

Height of cuboid= 4cm

Surface area of cuboid = 2(lb+bh+lh)

2(8×4+4×4+4×8)

= 2(32+16+32)

= 2(80)

= 160cm²

Therefore, Surface area of Cuboid is 160 cm².