bantuin ya... Pake cara plisss....

a. r=3cm
t=7cm
v=phi×r×r×t
v=22/7×3×3×7
v=198cm³

b. v=22/7×14×14×20
v=12.320cm³

c. v=22/7×6×6×28
v=3.168cm³

d. v=3.14×2×2×5
v=62.8 cm³

a. V = phi x r² x t
= 22/7 x 3 cm x 3 cm x 7 cm
= 22/7 x 63 cm
= 1.386/7 = 198 cm³
b. V = phi x r² x t
= 22/7 x 14 cm x 14 cm x 20 cm
= 22 x 2 cm x 14 cm x 20 cm
= 22 x 560 cm
= 12.320 cm³
c. V = phi x r² x t
= 22/7 x 6 cm x 6 cm x 28 cm
= 22/7 x 1.008
= 22.176/7 = 3.168 cm³
d. V = phi x r² x t
= 3,14 x 2 cm x 2 cm x 5 cm
= 3,14 x 20 cm
= 62,8 cm³
maaf klw salah:)