A piece of tin is in the form of a ractangle having length 12 cm and w

1.	A piece of tin is in the form of a ractangle having length 12 cm and width 8 cm. This is used to construct a closed cube. The side of the cube is:1. 2 cm2. 3 cm3. 4 cm4. 6 cm
Answer» Correct Answer - Option 3 : 4 cm Given Length of rectangle = 12 cm Width of rectangle = 8 cm Formula used Area of rectangle = length × breadth Total surface area of cube = 6(side)² Calculation ⇒ Area of rectangle = surface area of cube ⇒ 12 × 8 = 6 × side² ⇒ side of cube = 4 cm ∴ the side of the cube is 4 cm

A piece of tin is in the form of a ractangle having length 12 cm and width 8 cm. This is used to construct a closed cube. The side of the cube is:1. 2 cm2. 3 cm3. 4 cm4. 6 cm

Answer» Correct Answer - Option 3 : 4 cm

Given

Length of rectangle = 12 cm

Width of rectangle = 8 cm

Formula used

Area of rectangle = length × breadth

Total surface area of cube = 6(side)²

Calculation

⇒ Area of rectangle = surface area of cube

⇒ 12 × 8 = 6 × side²

⇒ side of cube = 4 cm

∴ the side of the cube is 4 cm

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A piece of tin is in the form of a ractangle having length 12 cm and width 8 cm. This is used to construct a closed cube. The side of the cube is:1. 2 cm2. 3 cm3. 4 cm4. 6 cm

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