nomor 11 tolong dibantu yaa!!!

======== Jawaban ========

Sub. Mapel = Math
Sub. Materi = Bangun Datar
Pertayaan yg diajukan = 1

Penyelesaian :
L = phi × r²
616 = 22/7 × r²
r² = 616 ÷ 22/7
r² = 616 × 7/22
r² = 196
r = √196
r = 14 cm

K = 2 . phi . r
K = 2 . 22/7 . 14 cm
K = 88 cm[tex] [/tex]
Opsi C