Keliling sebuah lingkaran 110 cm. Luas lingkaran tersebut adalah....

Keliling = phi x d
110 = 22/7 x d
D=110 / 22/7
D=110 x 7/22
D=5 x 7
D=35

L =1/4 x phi x d²
L =1/4 x 35 x 35
=962,5 cm²

•Semoga Membantu•

K = 110 cm

K = phi × d
110 = 22/7 × d
d = 110 : 22/7
d = 110 × 7/22
d = 35 cm

L = 1/4 × phi × d^2
L = 1/4 × 22/7 × 35 × 35
L = 962,5 cm^2