Question

find the total surface area of a lunch box with demension 15 cm 9 cm 8 cm​

Answer 1

Answer:

190

Step-by-step explanation:

that is answer

Answer 2

Given :-

Dimensions of a lunch box :-

• Length = 15 cm
• Breadth = 9 cm
• Height = 8 cm

To find :-

• Total surface area of a lunch box = ?

Solution :-

The shape of lunch box = Cuboid

So, The formula of total surface area of cuboid :-

$\large\boxed{\sf\green{2(lb + bh + lh)}}$

$\implies$ 2(15 × 9 + 9 × 8 + 8 × 15)

$\implies$ 2(135 + 72 + 120)

$\implies$ 2(327)

$\implies$ 654 $\sf{cm^2}$

$\large\boxed{\sf\blue{Total~surface~area~of~lunch~box~= 654~cm^2}}$

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Know more :-

Cuboid -

• Volume = Length × breadth × height
• Perimeter = 2(l + b)
• Diagonal = $\sf{\sqrt{l^2 + b^2 + h^2}}$