hitunglah jati jari lingkaran jika luasnya 616cm

L = πr²
r² = L/π
r² = 616.7/22
r² = 28.7
r² = 196
r = √196
r = 14 cm

L.lingkaran= pi × r^2
616 = 22/7 . Jari"
R = 22/7 × 616
R^2 = 1936
R = 44