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A can is12cm in height and10cm in diameter. What is the area of the label paper on the can? How many pieces of iron does it take to make a can?
Need trademark paper

10× 3.14×12 = 376.8 (square centimeter)

The bottom radius is

10/2 = 5cm

The bottom area is

5× 5× 3. 14 = 78.5 square centimeters.

Need iron sheet

78.5× 2+376.8 = 533.8 (square centimeter)

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