9. Shazli took a wire of length 44 cm and bent it into the shape of a circle.
Find the radius of that circle. Also find its area. If the same wire is bent into the shape
of a square, what will be the length of each of its sides? Which figure encloses more
area, the circle or the square? (Take π = 22/7)
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2πr = 44
2 ×22/7×r = 44 44/7 ×r
= 44r
= 44 ÷447r
= 44 ×744
= 7 cm
Area = TT 2
= 227×7×7
= 154 cm 2
Perimeter of square = 4S
4S = 44
S = 44/4 =11cm
Area of square = S2= 112= 11×11= 121 cm2
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