Kak tolongin dong pake diameter luas dan keliling ya

Rumus :
Luas = π × r²
Kelling = π × d

3.L = 3.14 × 23²
= 1661.06 cm2
K = 3.14 × 46
= 144.44 cm

4.L = 3.14 × 27.5²
= 2374.625 cm²
K = 3.14 × 55
= 172.7 cm

5.L = 3.14 × 40²
= 5024 cm²
K = 3.14 × 80
= 251.2 cm

6.L = 3.14 × 15²
= 706.5 cm2
K = 3.14 × 30
= 94.2 cm

7.L = 3.14 × 37.5²
= 4411.625 cm²
K = 3.14 × 75
= 235.5 cm

8.L = 3.14 × 30²
= 2826 cm²
K = 3.14 × 60
= 188.4 cm

9.L = 3.14 × 46²
= 6644.24 cm²
K = 3.14 × 92
= 288.88 cm²

10.L = 3.14 × 50²
= 7850 cm²
K = 3.14 × 100
= 314 cm

Semoga Membantu :) Maaf kalo salah
``»•^°Mystic°^•«``

3. k=3,14. 46
= 144,44 cm
4. k= 3,14. 55
= 172,7 cm
5. k= 3,14. 80
= 251,2 cm
6. k= 3,14. 30
= 94,2
7. k= 3,14. 75
= 235,5 cm

JADIKAN JAWABAN TERBAIK YA semoga membantu