To determine the number of stories in a building that is 90 feet high, we need to know the typical height of one story. In general, the height of one story in a building is around 10 feet, but this can vary depending on the design and purpose of the building. Therefore, if we assume a standard height of 10 feet per story, a building that is 90 feet high would have approximately 9 stories.
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One floor would be 30 x 90 = 2700 square feet. Since it has two stories, it has 2 x 2700 = 5400 square feet.
Assuming the circle has a diameter of 90 feet, its area is pi*(90/2)2 = 6362 sq ft approx.
It is: 42 feet by 90 feet = 42*90 = 3780 square feet
If that's 12 x 90 feet, it's 1080 square feet. If that's 12 x 90 inches, it's 7.5 square feet.
Multiply the 10 times the 9, 90 square feet