tolong di jwab besok di kumpul no 5/11

5. (PQ × SU) + (RS × PU) / PS
= (7×5) + (15×3) / (3+5)
= 35 + 45 / 8
= 80 / 8 = 10 cm (A)

11. Luas alas × tinggi
= (πr²) × t
= (22/7 × 10,5 × 10,5) × 15
= 346,5 × 15
= 5197,5 cm³ (B)

Maaf klu salah, jdkn jwbn tercerdas y;)