a building casts a shadow 48 feet long. at the same time a 40 foot tall flagpole casts a shadow 9.6 feet long. what is the height of the building?

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You start by dividing 40 by 9.6 which gives 4.1666 which can be rounded to 4.2. Then, you divide 48 by 4.2 which results in 11.4