The roof

The house's roof has the shape of a regular quadrilateral pyramid 5 m high and the edge of the base 7 m. How many tiles with an area of 540 cm² are needed?

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

arithmetic

square root
division
rounding

solid geometry

pyramid
surface area

planimetry

Pythagorean theorem
right triangle
area of a shape

Units of physical quantities

unit conversion
area

Grade of the word problem

practice for 13 year olds
practice for 14 year olds

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