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9-26.

Mrs. Albright is trying to cover her tiled classroom floor with rugs to reduce the noise that her students generate when they are working in teams. Her classroom is feet by feet. While Mrs. Albright is shopping during the weekend, she notices a sale on -foot circular rugs. If she needs to cover of her classroom floor space to notice a significant reduction in noise, should she buy the rugs from this sale? Homework Help ✎

What is the area of one circular rug with radius ?

How many rugs fit in the ft x  ft space?

Is the total area of all the rugs or of the ft2 space?