Question

find the area of a circle with a diameter 10 feet

Answer 1

Answer:

550/7

Step-by-step explanation:

radius: 10/2=5

area : 22/7×5×5

=22/7×25

550/7

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Answer 2

Answer:

78.54square feet

Step-by-step explanation:

Area of a circle in terms of radius:

Area = π·r2 = 3.14·52 = 78.54 square feet(*)

Area of a circle in terms of diameter:

Area = π·(d2)2 = 3.14·(102)2 = 3.14·(5)2 = 78.54 square feet(*)

Area of a circle in terms of circumference:

Area = C24π = 31.4224π = 987.22(4·3.14) = 987.2212.56 = 78.54 square feet