Diameter lingkaran 42 cm kelilingnya ……cm
K.○ = 2 x phi x r
r = d : 2
r = 42 : 2 = 21
k.○ = 2 x 22/7 x 21
= 132
K = d
K = 42
K = 132
Diameter lingkaran 42 cm kelilingnya ……cm
K.○ = 2 x phi x r
r = d : 2
r = 42 : 2 = 21
k.○ = 2 x 22/7 x 21
= 132
K = d
K = 42
K = 132