Answers

2016-02-26T17:42:03+05:30
The wire is in the shape of rectangle
length = 18 cm
breadth = 15 cm

now the wire is bent into a circle

so

perimeter of rectangle = circumference of the circle

2(l+b) = 2πr
2(18 +15)     =  2πr
2
×33 = 2πr
66 = 
2πr

66 
× 7/ 2×22 = r
33 × 7/22 =r
21/2  = r
10.5 = r

so the radius of the circle is 10.5 cm
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