Question

what is the total outside surface area of an open box of dimension 10cm multiplied by 8cm multiplied by 2.5cm
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Answer 1

Answer:

I think so the answer will be 452 square centimetre

Step-by-step explanation:

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Answer 2

A n s w e r

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G i v e n

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• Dimension of box 10cm × 8cm × 2.5cm

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F i n d

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• Total surface area of the box

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S o l u t i o n

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Clearly the box is in cuboid shape

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So,

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We know that ,

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$\underline{\bold{\texttt{Total surface area of cuboid :}}}$

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➠ 2(lb + bh + lh) ⚊⚊⚊⚊ ⓵

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Where ,

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• l = Length

• b = Breadth

• h = Height

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$\underline{\bold{\texttt{Total surface area of cuboidal box :}}}$

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• l = 10

• b = 8

• h = 2.5

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⟮ Putting the above values in ⓵ ⟯

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➜ 2[lb + bh + lh]

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➜ 2[10(8) + 8(2.5) + 10(2.5)]

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➜ 2[80 + 20 + 25]

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➜ 2[125]

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➨ 250 sq. cm.

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• Hence the total surface of the box is 250 sq. cm.

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Additional information

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Lateral surface area of cuboid

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• 2h(l + b)

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Where ,

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➻ h = Height

➻ l = Length

➻ b = Width

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Volume of cuboid

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• l × b × h

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Where ,

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➻ l = Length

➻ b = Width

➻ h = Height