Dik: r kerucut = 14cm t kerucut = 9cm t tabung = 18 cm dit: V bandul? jwb:
MathSolver74
V = Vkerucut + Vtabung + V 1/2 bola = 1/3 x 22/7 x 14 x 14 x 9 + 22/7 x 14 x 14 x 18 + 4/3 x 1/2 x 22/7 x 14 x 14 x 14 = 1848 cm³ + 11088 cm³ + 5749,33 cm³ = 18685,33 cm³
= 1/3 x 22/7 x 14 x 14 x 9 + 22/7 x 14 x 14 x 18 + 4/3 x 1/2 x 22/7 x 14 x 14 x 14
= 1848 cm³ + 11088 cm³ + 5749,33 cm³
= 18685,33 cm³
I. V kerucut = × π × r² × t
= × × 14² × 9
= 1848
II. V tabung = π × r² × t
= × 14² × 18
= 11088
III. V bola = × πr³
= × × 14³
= 5749,33
V bandul = 1848 + 11088 + 5749,33 = 18685,33