Question

If a cuboidal box has height, length and width as 20 cm, 15 cm and 10 cm respectively. Then its total surface area is

urgent.................​

Answer 1

A n s w e r

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G i v e n

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• Height of cuboidal box is 20 cm

• Length of the cuboidal box is 15 cm

• width of the cuboidal box is 10 cm

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F i n d

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• Total surface area of cuboidal box

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S o l u t i o n

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Total surface area of cuboidal box can be measured by the formula to find total surface are of cuboid

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

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➠ 2(lw + wh + lh) ⚊⚊⚊⚊ ⓵

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Where ,

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• l = Length

• w = Width

• h = Height

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

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• l = 15 cm

• w = 10 cm

• h = 20 cm

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⟮ Putting the above values in ⓵ ⟯

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➜ 2(lw + wh + lh)

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➜ 2(15(10) + 10(20) + 15(20))

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➜ 2(150 + 200 + 300)

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➜ 2(650)

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➨ 1300 sq. cm.

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• Hence the total surface area of cuboidal box is 1300 sq. cm.

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Additional information

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Volume of cuboid

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• l × w × h

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Where ,

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➻ l = Length

➻ w = Width

➻ h = Height

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Lateral surface area of cuboid

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• 2h(l + w)

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Where ,

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➻ l = Length

➻ w = Width

➻ h = Height