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A square piece of cardboard with side 12...

A square piece of cardboard with side 12 cm has a small square of 2 cm cut out from each of the corners. The resulting flaps are turned up to make a box 2 cm deep. The volume of the box is:

A

`94 cm^(3)`

B

`102 cm^(3) `

C

`128 cm^(3) `

D

`112 cm^(3)`

Text Solution

AI Generated Solution

The correct Answer is:
To find the volume of the box formed by cutting out squares from the corners of a cardboard and folding up the flaps, follow these steps: ### Step 1: Determine the dimensions of the cardboard The original square piece of cardboard has a side length of 12 cm. ### Step 2: Calculate the new dimensions after cutting Since a square of 2 cm is cut from each corner, the length and width of the base of the box will be reduced by 2 cm from each side. - New length = Original length - 2 * (size of cut square) - New length = 12 cm - 2 * 2 cm = 12 cm - 4 cm = 8 cm So, the new dimensions of the base of the box are 8 cm by 8 cm. ### Step 3: Determine the height of the box The height of the box is equal to the size of the square cut out from the corners, which is 2 cm. ### Step 4: Calculate the volume of the box The volume \( V \) of a box is given by the formula: \[ V = \text{length} \times \text{width} \times \text{height} \] Substituting the values: \[ V = 8 \text{ cm} \times 8 \text{ cm} \times 2 \text{ cm} \] Calculating this gives: \[ V = 64 \text{ cm}^2 \times 2 \text{ cm} = 128 \text{ cm}^3 \] ### Final Answer The volume of the box is **128 cm³**. ---
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