tolong jawab nomor 3,4,5,6,7,8,9,10

3) d = 46 cm
r = 23 cm
L = π × r²
= 3,14 × 23 × 23
= 1661,06 cm²

4) d = 55 cm
r = 27,5 cm
L = π × r²
= 3,14 × 27,5 × 27,5
= 2374,625 cm²
= 2374,6 cm²

5) d = 80 cm
r = 40 cm
L = π × r²
= 3,14 × 40 × 40
= 5024 cm²

6) d = 30 cm
r = 15 cm
L = π × r²
= 3,14 × 15 × 15
= 706,5 cm²

7) d = 75 cm
r = 37,5 cm
L = π × r²
= 3,14 × 37,5 × 37,5
= 4415,625
= 4415,6 cm²

8) d = 60 cm
r = 30 cm
L = π × r²
= 3,14 × 30 × 30
= 2826 cm²

9) d = 92 cm
r = 46 cm
L = π × r²
= 3,14 × 46 × 46
= 6644,24 cm²

10) d = 100 cm
r = 50 cm
L = π × r²
= 3,14 × 50 × 50
= 7850 cm²