Circumference 6338

The circle has the same area as the square, whose circumference is 400m. Calculate the diameter of the circle.

Correct answer:

D =  112.8379 m

Step-by-step explanation:

o=400 m a=o/4=400/4=100 m S1 = S2 S1=a2=1002=10000 m2 S2 = π r2 = S1  r=S1/π=10000/3.141656.419 m D=2 r=2 56.419=112.8379 m

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