Rumus
Volume bola = 4/3 x × r³
Luas permukaan bola = 4 × × r²
a. L = 4 x p x 12 x 12
= 576p m^2
V = 4/3 x p x 12 x 12 x 12
= 2304p m^3
b. L = 4 x p x 5 x 5
= 100p cm^2
V = 4/3 x p x 5 x 5 x 5
= 500/3p cm^3
c. L = 4 x p x 6 x 6
= 144p dm^2
V = 4/3 x p x 6 x 6 x 6
= 288p dm^3
d. L = 4 x p x 4,5 x 4,5
= 81p cm^2
V = 4/3 x p x 4,5 x 4,5 x 4,5
= 243/2p cm^3
e. L = 4 x p x 10 x 10
= 400p m^2
V = 4/3 x p x 10 x 10 x 10
= 4000/3p m^3
f. L = 4 x p x 15 x 15
= 900p m^2
V = 4/3 x p x 15 x 15 x 15
= 4500p m^3
2. Berapakah luas permukaan bangun setengah bola tertutup berikut.
Pembahasan:
Editor: Fajar Sidik Nur Cahyo
Sumber: buku.kemdikbud.go.id