please bantu donggg makasih sebelum nyaaa

Smoga membantu sh_!

Yuhuuu:)

L = πr^2 x 3/4
462 = 22/7 x r^2 x 3/4
r^2 = 462 : 22/7 : 3/4
r^2 = 462 x 7/22 x 4/3
r^2 = 147 x 4/3
r^2 = 196
r = √196
r = 14

Maka keliling =
2πr x 3/4
2 x 22/7 x 14 x 3/4
2 x 44 x 3/4
88 x 3/4
66

Jawaban: B.
maaf klo salah