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A porch has the shape of a semicircle with a diameter of 7 ft. What is the approximate area of the porch, rounded to the nearest square foot? Use 3.14 to approximate . ft2
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Jul 1, 2016
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A porch has the shape of a semicircle with a diameter of 7 ft.
What is the approximate area of the porch, rounded to the nearest square foot? Use 3.14 to approximate .
ft2
Mathematics
middle-school
Codar
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A = pi * r^2
A = 3.14 * 3.5^2
A = 38.465
38.465/2 = 19.2325 square feet of semicircle
Lucas Meine
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Jul 2, 2016
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Lucas Meine
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A = pi * r^2
R = D / 2
R = 7 / 2
R = 3.5
A = 3.14 * 3.5^2
A = 3.14 * 12.25
A = 38.465
Divide it by 2 since its a semi-circle:
38.465 / 2 = 19.2325
So about 19 square feet.
Bruck
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Jul 7, 2016
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