Tentukan jari jari lingkaran yang kelilingnya dama dengan A.44 cm B.22cm C.88cm D.210cm

A.
K = 2πr
r = K/2π = 44/2(22/7) = 44/(44/7) = 7 cm

B.
K = 2πr
r = K/2π = 22/2(22/7) = 22/(44/7) = 3,5 cm

C.
K = 2πr
r = K/2π = 88/2(22/7) = 88/(44/7) = 14 cm

D.
K = 2πr
r = K/2π = 210/2(22/7) = 210/(44/7) = 33,41 cm