hendrisyafa
A. V = La. x t --> La = Luas Trapesium + L persegi panjang = 1/2 (40+12). (12-6) + (40 x 6) = 1/2. 52. 6 + 240 = 156+ 240 = 396 cm² = 396 x40 = 15.840 cm³
Lp = 2.La + Ka. t --> Ka = Keliling Trapesium = 40+6+28,6+12+12 = 98,6 cm = 2.396 + (98,6. 40) = 792 + 3944 = 4736 cm²
c. V = La x t --> La = [ 14 x (2+14+2) ] - [ 1/2 .22/7. 7² ] = [ 14 x 18 ] - [ 11 x 7 ] = 252 - 77 = 175 cm² = 175 x 20 = 3500 cm³
Lp = 2.La + Ka. t ---> Ka = 14+2+ (22/7. 7) +2+14+(2+14+2) = 16 + 22 + 16 + 18 = 72 cm = (2. 3500) + (72 . 20) = 7000 + 1440 = 8.440 cm²
= 1/2 (40+12). (12-6) + (40 x 6)
= 1/2. 52. 6 + 240
= 156+ 240
= 396 cm²
= 396 x40
= 15.840 cm³
Lp = 2.La + Ka. t --> Ka = Keliling Trapesium
= 40+6+28,6+12+12
= 98,6 cm
= 2.396 + (98,6. 40)
= 792 + 3944
= 4736 cm²
c. V = La x t --> La = [ 14 x (2+14+2) ] - [ 1/2 .22/7. 7² ]
= [ 14 x 18 ] - [ 11 x 7 ]
= 252 - 77
= 175 cm²
= 175 x 20
= 3500 cm³
Lp = 2.La + Ka. t ---> Ka = 14+2+ (22/7. 7) +2+14+(2+14+2)
= 16 + 22 + 16 + 18
= 72 cm
= (2. 3500) + (72 . 20)
= 7000 + 1440
= 8.440 cm²