mohon jawab ya pakai jalannya

r = 35cm

k = 2πr
k = 2.22/7 . 35
k = 44. 5 = 220cm

L = πr²
L = 22/7 . 35 .35
L = 22 . 5 . 35
L = 3850cm²

semoga menbantu...
dari: th

keliling=phi×Diameter=22/7×70cm=220cn
luas =phi×r×r=22/7×35×35=3850cm^