Tin sheet

How much sheet metal is needed for a box in the shape of a triangular prism with a base edge of 20 cm, base height of 15 cm, and prism height of 30 cm? An additional 10% of sheet metal is needed for joins.

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

solid geometry

surface area
prism

planimetry

area of a shape
triangle

basic operations and concepts

percentages

Units of physical quantities

area

Grade of the word problem

practice for 12 year olds
practice for 13 year olds

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