PrisyaRNP
Keliling=phi x d 37,68=3,14 x d 12=d , r =6 maka luas=phi x r x r =3,14x6x6 =113,04
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ikhwanafina
Dik : kell O = 37,68 cm dit : luas O =? jawab : kell = π x d 37,68 = 3,14 x d d = 12 r = 12:2 =6 luas = π x r² = 3,14 x 6 x6 = 3,14 x 36 = 113,04 cm²
37,68=3,14 x d
12=d , r =6
maka luas=phi x r x r
=3,14x6x6
=113,04
dit : luas O =?
jawab : kell = π x d
37,68 = 3,14 x d
d = 12
r = 12:2 =6
luas = π x r²
= 3,14 x 6 x6
= 3,14 x 36
= 113,04 cm²