hitunglah luas dan kelilong lingakaran di samping jika jari jarinya di ketahui 49 cm !

L=phi×r×r
=22/7×49×49
=7.546 cm2

K=phi×d
d=49×2
=98

K=22/7×98
=308 cm

luas lingkaran
= phi × r × r
= 22/7 × 49 × 49
= 22 × 7 × 49
= 154 cm × 49
= 7.546 cm^2

jari (r) = 49
D = 49 × 2 = 98 cm

keliling lingkaran
= phi × D
= 22/7 ×98 cm
= 22 × 14 cm
= 308 cm^2

SEMOGA MEMBANTU :)