bantuyh maksih kalo gk keliatn 5. 34 cm r: luas 6. 21 cm r: luas 7. 20 cm r: luas 8. 24 cm r; luas 9. 42 cm r: luas 10. 38 cm r; luas

5. L = phi × r^2

= 3,14 × 34^2

= 3,14 × 1.156

= 3.629,84 cm^2


6. L = phi × r^2

= 22/7 × 21^2

= 22/7 × 441

= 22 × 63

= 1.386 cm^2


7. L = phi × r^2

= 3,14 × 20^2

= 3,14 × 400

= 1.256 cm^2


8. L = phi × r^2

= 3,14 × 24^2

= 3,14 × 576

= 1.808,64 cm^2


9. L = phi × r^2

= 22/7 × 42^2

= 22/7 × 1.764

= 22 × 252

= 5.544 cm^2


10. L = phi × r^2

= 3,14 × 38^2

= 3,14 × 1.444

= 4.534,16 cm^2