tolong jwb dngn benar ya.... no 9 sampe 15 dengan cara

9. v = LΔ × t = 1/2 × 16×12×24 = 2304 cm³
10. v = πr²t = 22/7×14×14×64=39424 cm³
11. L= p×l + 1/2×a×t = 24×15 + 1/2 ×(15+6+6)×(36-24)=360+162=522 cm²
12. r=15 cm, L = πr²=3,14×15×15=706,5 cm²
13. 2464=22/7.r²⇔r²=2464/22/7⇔r²=784⇔r=√784=28 cm
14. v = 3,14×2×2×5=62.8 m³
15. 308=22/7×r²×20⇔308=440/7r²⇔r²=308/440/7=4,9⇔r=√4,9=2,2 cm. d=2r=2×2,2=4,4 cm