Question

No 1, 2, 3 memakai cara atau no 1 atau 2 help oy

Answer 1

1.4p=4(30)=120
4l=4(20)=80
4t=21(10)=40
=120+80+40=240
kawat=10m=1000cm
a.)bnyk:1000per240:4
=960
b.)sisa:1000-960
=40cm

2.lp=2lt+2pt
=2(lt+pt)
=2(28+36)
=2(64)
=128m^2
biaya:50.000x128
=6.400.000

3.4x:3x:2x
12:9:6
l=2(pl+lt+pt)
=2(12×9+9×6+12×6)
= 2(108+54+72)
=468