Kak tolong jawab no 19 dan 20 ya dikumpulin besok

Kak tolong jawab no 19 dan 20 ya dikumpulin besok

No 19

Diketahui =

Diameter tabung (d) = 14 cm
Jari jari (r) = diameter ÷ 2 = 14 ÷ 2 = 7 cm
Tinggi tabung = 24 cm

Ditanya =

Volume tabung = ?

Penyelesaian =

Volume tabung
= $pi$ × r × r × tinggi
= $frac{22}{7}$ × 7 × 7 × 24
= 22 × 7 × 24
= 154 × 24
= 3.696 cm³

No 20.

Diketahui =

Diameter (d) = 14 cm
Jari jari (r) = diameter ÷ 2 = 14 ÷ 2 = 7 cm
Tinggi kerucut = 10 cm

Ditanya =

Volume kerucut = ?

Penyelesaian =

Volume kerucut
= $frac{1}{3}$ × $pi$ × r × r × tinggi
= $frac{1}{3}$ × $frac{22}{7}$ × 7 × 7 × 10
= $frac{1}{3}$ × 22 × 7 × 10
= $frac{1}{3}$ × 154 × 10
= $frac{1}{3}$ × 1540
= 513,333… cm³
= 513,3 cm³

Semoga membantu ^-^

19.
Dik: d=14, r=7, t=24
Dit: volume
Dij: 22/7 x 7 x 7 x 24
= 22/7 x 49 x 24
= 22 x 7 x 24
= 3696cm³

20.
V=1/3 x 7 x 7x 10
= 1/3 x 49 x 10
=1/3 x 490
= 163, 3

maaf ya kalo salah….. ^-^