ini kk dan abg.... ulanganya

3. L lingkaran = Phi.r^2 = 22/7.21.21 = 1386 cm^2
4. L lingkaran = Phi.r^2 = 3,14.25.25 = 1962,5 cm^2
5. L lingkaran = Phi.r^2 = 22/7.28.28 = 2464 cm^2
6. L lingakaran = Phi.r^2 = 22/7.42.42 = 5544 cm^2
7. L lingkaran = Phi.r^2 = 3,14.50.50 = 7850 cm^2
8. L lingkaran = Phi.r^2 = 22/7.77.77 = 18634 cm^2
9. L lingakaran = Phi.r^2 = 3,14.95.95 = 28338,5 cm^2
10. L lingkaran = Phi.r^2 = 22/7.105.105 = 34650 cm^2