A wire in the shape of a square with each side equal to the 15.5cm is bend into the shape of a circle. Find the circumference and the diameter of the circle.
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Area of square
a²
15.5²
240.25
=area if circle
240.25 =πr²
r²=240.25x7/22
r²=76.44
r=8.742
diameter
r+r=8.74x2
= 17.48
circumference
2x22/7x8.74
=17.48
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