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Cylindrical biscuit box, bottom diameter 6cm, height 10cm. How many flat plates does it take to make such a biscuit box?
Is to find the surface area of a cylinder.

Radius: 6× 1/2 = 3cm.

Bottom area: 3.14× 3× 3 = 28.26cm2.

Side area: 3.14× 6×10 =188.4cm2.

Surface area: 28.26×2+ 188.4.

=56.52+ 188.4

=244.92 square centimeters

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