Luas permukaan
Lp=Luas permukaan balok+Luas permukaan setrngah tabung
Lp=p×l+2(p×t+l×t)+½(πdt+2πr²)
Lp=20×14+2(20×10+14×10)+½(22/7×14×20+2×22/7×7²)
Lp=280+2(200+140)+½(22×2×20+2×22×7)
Lp=280+2(340)+½(880+308)
Lp=280+680+½(1.188)
Lp=960+594
Lp=1.554cm²
Semoga bermanfaat
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Penyelesaian
Luas permukaan
Lp=Luas permukaan balok+Luas permukaan setrngah tabung
Lp=p×l+2(p×t+l×t)+½(πdt+2πr²)
Lp=20×14+2(20×10+14×10)+½(22/7×14×20+2×22/7×7²)
Lp=280+2(200+140)+½(22×2×20+2×22×7)
Lp=280+2(340)+½(880+308)
Lp=280+680+½(1.188)
Lp=960+594
Lp=1.554cm²
Semoga bermanfaat