Question

kalu tolong di jawab semua plis

Answer 1

No 7L.arsir= 1/2Lo + L.segi3
1/2Lo=1/2πr^2=1/2.22/7.7.7=11.7=
=77
L.segi3=1/2. a .t
=1/2.14.4=28
L.arsir=77+28=105

no.8
L.arsir=Lpersegi-Lo
L.persegi=s.s=21.21=441
L.o=π r^2=22/7.10,5.10,5=346,5
L.arsiran=441-346,5=94,5

no.9
L.arsiran=Lo(besar)-L.o(kecil)
Lo(besar)=πr^2=22/7.10,5.10_5=346,5
Lo(kecil)=πr^2=3,14.5.5=78,5
L.arsiran=346,5-78,5=268

no10

Larsiran=L persegi panjang+1/2Lo
=14×17+1/2πr^2
=238. +. 1/2. 22/7. 7.7
=238. +. 77
=315