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Verified answer
Jawab:_______
CARI JARI-JARI/r Dulu.
Luas lingkaran
L = πr^2
3860. = 3,14 x r^2
3860/3,14 = r^2
1229 = r^2
√1229 = r
35 = r
Keliling lingkaran
= π x 2r
= 22/7 x 2 x 35
= 22 x 2 x 5
= 220 => A
*Terima kasih*
Verified answer
Itu kayaknya salah soal. Kalau luasnya 3850, baru ada jawabannya.L = 22/7 x r²
3850 = 22/7 x r²
3850 x 7/22 = r²
1225 = r²
r = √1225
r = 35 cm
d = 70 cm
K = 22/7 x d
K = 22/7 x 70
K = 220 cm
Keliling = 220 cm
Jawaban: A
Jadikan terbaik ya, makasih