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PENGERTIAN LINGKARAN DEFINITION OF CIRCLE r r r r r r r r Lingkaran adalah kumpulan titik-titik yang berjarak sama terhadap titik pusat Circle is a group of points whose same distances from a center of point

UNSUR-UNSUR LINGKARAN
B PARTS OF CIRCLE A C O F I E D O = Pusat lingkaran Garis lengkung AB,ED = busur CF= Diameter (d) OI = Apotema OF,OC,OA,OB = Jari-jari (r) Arsiran AOB = Juring lingkaran ED,FC = Tali busur Arsiran ED = Tembereng

Before you know the formula, you must know Л (phi)!!!
RUMUS KELILING LINGKARAN FORMULA of CIRCUMFERENCE l K = keliling Before you know the formula, you must know Л (phi)!!! Л = - K d d = diameter

are you sure ??? Л is K 22 3,14 or or d 7 YES NO

7 cm d = K 22cm So, л = K= d 22 Л = Л = 0r 3,141… 7

RUMUS KELILING LINGKARAN
Л = K x d x d d v K = 2 л r

LUAS LINGKARAN Л r x r 2 л r 1 1/2 . x r 2 7 6b 3 6 6a 5 4 1 2 r
½ keliling lingkaran X r 1 8 1/2 . 2 л r x r 2 7 6b Л r x r 3 6 Rumus Luas Lingkaran = 6a 5 4 LUAS LINGKARAN AREA OF CIRCLE Luas Persegi Panjang = P x L 1 7 5 3 2 4 L = r 8 6b 6a P = ½ kll lingkaran