Lamp cone shell

The lamp shade should be formed by the shell of a cone with a base diameter of 48 cm and a side of 32 cm. Calculate how much material will be needed to make it, assuming 8% waste

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You need to know the following knowledge to solve this word math problem:

solid geometry

cone
surface area

planimetry

Pythagorean theorem
right triangle
area of a shape

basic operations and concepts

percentages

Grade of the word problem

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