A wire in the shape of a rectangle of length 18 cm and width 15 cm is reshaped and bent in the form of a circle. Find the radius.
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Answer:
perimeter of rectangle-2(l+b)
2(18+15)
2(33)
66cm
- circumference of circle-2pieR
- 2×22/7×r-66
- 44/7×r=66
- r=7×66/44
- r=21/2
- r=10.5cm
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