Isilah dengan jawaban yang tepat?!pake cara yah thanks

1. titik O
2. tembereng
3. ½
4. tali busur
5. gambar (d)
6. juring AOB
7. keliling = 2 x 22/7 x 7 = 44 cm
8. keliling = 22/7 x 7 = 22 cm
9. keliling = 2 x 22/7 x 21 = 132 cm
10. Luas = 22/7 x (140/2)² = 15.400 cm²
11. Luas = 3,14 x 30² = 2.826 cm²
12. Luas = 22/7 x (42/2)² = 1.386 cm²
13. d = 314/3,14 = 100 cm
Luas = 3,14 x (100/2)²
= 78.500 cm²
14. r² = 1256/3,14 = 400
r = √400 = 20
Keliling = 2 x 3,14 x 20 = 125,6 cm

15. keliling = 2×28 + 22/7 x 28
= 56 + 88
= 144 cm
Luas = 22/7 x 28²/2 = 1.232 cm²

1. Luas hiasan dinding
= 22/7 x (28/2)²
= 22/7 x 196
= 616 cm²