.a wire is in the form of rectangle 12.8 centimetre long and 9.2 cm wide is bent into the form of circle find the radius of circle
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1
Step-by-step explanation:
area of rectangle = 9.2× 12.8=116.76
area of circle= 22/7× r2
116.76=22/7× r2
1167×7/22= r×r
Answered by
3
Step-by-step explanation:
perimeter of rectangle = (18.7+14.3)×2 = 33×2 = 66 cm
circumference of circle = perimeter of rectangle
2πr = 66
r = 66/2π
r = 66×7/2×22
r = 21/2
r = 10.5 cm
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