Question

Three cubes each with 8cm edge are joined end to end .Find total Surface area Of the resulting cuboid
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Answer 1

Step-by-step explanation:

Two cubs with edge length 8 cm are joined

new length = 2 (8 cm) = 16 cm

new breadth = 8 cm

new height = 8 cm

Surface area of cuboid 2 (lb+bh+hl)

=2[16×8+8.8+8×16]

2[320]=640cm

Answer 2

Given -

• Three cubes, each having side = 8 cm

To find -

• Surface area Of the resulting cuboid

Solution -

The length of the resulting cuboid = 3 × 8 = 24 cm

Width of the resulting cuboid = 8 cm

Height of the resulting cuboid = 8 cm

Formula to find the total surface area of cuboid -

• 2( l × b + b × h + h × l)

= 2( 24 × 8 + 8 × 8 + 8 × 24)

= 896 $\sf{cm^2}$

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Know more :-

Cuboid -

• Total surface Area = 2 (Length × Breadth + breadth × height + Length × height)

• Volume =  (length × breadth × height)

• Perimeter = 4 (length + breadth + height)

Cube -

• Total surface area = 6 × $\sf{(side)^2}$

• Volume = $\sf{(side)^3}$

• Perimeter = 12 × side