A wire, when bent in the form of a square, encloses a region of area 1089 cm2 . if the same wire is bent into the form of a circle, then the area of the circle is
Answers
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Area of the square = 1089 cm² (Given)
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Find the length:
Area = Length x Length
Area = Length²
Length² = Area
Length = √Area
Given that area = 1089 cm²
Length = √1089
Length = 33 cm
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Find the perimeter of the square:
Perimeter = 4 x Length
Perimeter = 4 x 33
Perimeter = 132 cm
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Find the radius:
Circumference = Perimeter of the square = 132 cm
Circumference = 2πr
132 = 2πr
r = 132 ÷ 2π
r = 21 cm
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Find the area:
Area = πr²
Area = π(21)²
Area = 1386 cm²
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Answer: Area = 1386 cm²
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