Question

find the surface area of a cuboid

Answer 1

Answer:

143.52 cm²

Step-by-step explanation:

The formula for the surface area of a cuboid is SA=2lw+2lh+2hw.

2lw+2lh+2hw

2(7.2)(3.1)+2(7.2)(4.8)+2(4.8)(3.1)

Multiply.

44.64+69.12+29.76

Add.

= 143.52

The total surface area of the cuboid is 143.52 cm².

Answer 2

Answer:

143.52 cm^2

Solution,

Length(l)=7.2 cm

Breadth(b)=3.1 cm

Height(h)=4.8 cm

Now,

$surface \: area \: of \: cuboid \\ = 2(l \times b + b \times h + h \times l) \\ = 2(7.2 \times 3.1 + 3.1 \times 4.8 + 4.8 \times 7.2) \\ = 2(22.32 + 14.88 + 34.56) \\ = 2(71.76) \\ = 143.52 \: {cm}^{2}$

hope this helps...

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