A hospital needs a circular landing pad for their helicopter. The landing pad should be 5000 square feet. The contractor calculated that the pad would need to be about 40 feet across

Question

Diana Waller

Mathematics

6 December, 06:37

A hospital needs a circular landing pad for their helicopter. The landing pad should be 5000 square feet. The contractor calculated that the pad would need to be about 40 feet across

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Answers (1)

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Janelle Russell · Answer 1

area = pi x r^2

5000 = 3.14 x r^2

r^2=5000/3.14 = 1592.356

r = sqrt (1592.356) = 39.9 round to 40

diameter = 40*2 = 80

the pad needs to be 80 feet across