Hitung jari jari lingkaran? hitung diameter lingkaran? Jika luas lingkaran 11/350mm

Bab Lingkaran
Matematika SD Kelas V

luas = 11/350
π x r x r = 11/350
22/7 x r² = 11/350
r² = 11/350 x 7/22
r = √(1/100)
r = 1/10 mm
r = 0,1 mm

diameter = 2 x r
diameter = 2 x 0,1
diameter = 0,2 mm