Storm and roof

The roof of the building is a cone with a height of 3 meters and a radius equal to half the height of the roof. How many m² of the roof need to be repaired if 20% were damaged in a storm?

Your answer:

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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
triangle

basic operations and concepts

percentages

Units of physical quantities

area

Grade of the word problem

practice for 14 year olds
high school

We encourage you to watch this tutorial video on this math problem: video1 video2

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