romawi 2 nomor 1 sampai 9

1. s = √625 = 25 cm
2. L = 22/7 x 42²/4 = 1.386 cm²
3. luas alas = 720/20 = 36 cm²
4. luas selimut = 22/7 x 14 x 15 = 660 cm²
5. luas = (42x28) + (22/7 x 28²/4) = 1176 + 616 = 1.792 cm²
6. keliling = 3,14 x 2 x 26 = 163,28 cm
7. luas = 10² -5² = 75 cm²
8. tinggi = 3 x 650/150 = 13 cm
9. volume = (28² + (22/7 x 28²/4) ) x 20 = 28.000 cm³