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Calculate the area of the metal sheet required to make a closed cubical box of side length 40 cm.

May 27, 2026Mathematics

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\text{9600 cm}^2

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Question 2: Calculate the area of the metal sheet required to make a closed cubical box of side length 40 cm.

Identify the side length of the cubical box.
The side length of the cube is $s = 40 \text{ cm}$ .
Calculate the total surface area of the cube.
The formula for the total surface area of a closed cube is $6 \times s^2$ .
$\text{Area of metal sheet} = 6 \times (40 \text{ cm})^2$ $= 6 \times 1600 \text{ cm}^2$ $= 9600 \text{ cm}^2$
The area of the metal sheet required is $\text{9600 cm}^2$ .

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