Nurinnisa13
Nomor 2 Dik= t= 7cm V= 264 cm3 Dit= r?? Jawab= V= 1/3..r2.t 264 = 1/3 x 22/7 x r2 x 7 264 = 22/3 x r2 r2 = 264 x 3/22 r2 = 36 r = 6 (di akarkan)
nmr 3 Dik= V= 88.704 t= 36 Dit= r?? selimut tabung??? Jwb= V= x r2 x t 88.704= 22/7 x r2 x 36 88.704= 792/7 x r2 r2 = 88.704 x 7/792 r2 = 784 r = 28 selimut tabung= 2 x x r x t = 2 x 3,14 x 28 x 36 = 6330,24
nmr 4 Dik= d bola = d tab = 7cm r = 3,5 cm t tab = 7 cm Dit= perbandingan Volume?? Jwb= V bola = 4/3 x x r3 = 4/3 x 22/7 x 3,5 x 3,5 x 3,5 = 179,67 V tab = x r2 x t = 22/7 x 3,5 x 3,5 x 7 = 269,5 V bola : V tab = 179,67 : 269,5
Nomor 5 Dik= r= 10 cm Dit= V setengah bola Jwb= 2/3 x 3,14 x 10 x 10 x 10 = 2/3 x 314 = 209,33
Dik= t= 7cm
V= 264 cm3
Dit= r??
Jawab= V= 1/3..r2.t
264 = 1/3 x 22/7 x r2 x 7
264 = 22/3 x r2
r2 = 264 x 3/22
r2 = 36
r = 6 (di akarkan)
nmr 3
Dik= V= 88.704
t= 36
Dit= r??
selimut tabung???
Jwb= V= x r2 x t
88.704= 22/7 x r2 x 36
88.704= 792/7 x r2
r2 = 88.704 x 7/792
r2 = 784
r = 28
selimut tabung= 2 x x r x t
= 2 x 3,14 x 28 x 36
= 6330,24
nmr 4
Dik= d bola = d tab = 7cm
r = 3,5 cm
t tab = 7 cm
Dit= perbandingan Volume??
Jwb= V bola = 4/3 x x r3
= 4/3 x 22/7 x 3,5 x 3,5 x 3,5
= 179,67
V tab = x r2 x t
= 22/7 x 3,5 x 3,5 x 7
= 269,5
V bola : V tab = 179,67 : 269,5
Nomor 5
Dik= r= 10 cm
Dit= V setengah bola
Jwb= 2/3 x 3,14 x 10 x 10 x 10
= 2/3 x 314
= 209,33