Area to perimeter

Calculate circle circumference if its area is 254.34cm2

Result

o =  56.534 cm

Solution:

S=254.34 cm2  S=πr2  r=S/π=254.34/3.14168.9977 cm  o=2π r=2 3.1416 8.997756.534356.534 cmS=254.34 \ \text{cm}^2 \ \\ \ \\ S=\pi r ^2 \ \\ \ \\ r=\sqrt{ S/\pi }=\sqrt{ 254.34/3.1416 } \doteq 8.9977 \ \text{cm} \ \\ \ \\ o=2 \pi \cdot \ r=2 \cdot \ 3.1416 \cdot \ 8.9977 \doteq 56.5343 \doteq 56.534 \ \text{cm}



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