Can you give me formula of ch area related to circle

1.	Can you give me formula of ch area related to circle
Answer» 1..Area of circle = πr2 ..2☺.. area of semi- circle = 1/2πr2 .3.☺. area of quadrant of circle= 1/4πr2 ..4..☺. Circumference of circle= 2πr. 5☺.. circumference of semi-circle= r(π+2)..6☺area of sector= πr2theta /360 or 1/2×L×R,?..7☺ length of arc= 2πrtheta/360... .. I hope it is helpful for you..☺☺ See in ncert book of 10th class

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