Apakah warna kegemaran kamu? 2. Bagaimanakah warna tersebut mempengaruhi minda kamu? 3. Mengapakah kita digalakkan menanam pokok-pokok hijau?

1. Volume tabung (jari-jari 7 cm, tinggi 10 cm)

Step 1: Rumus volume tabung
$V = \pi r^{2} h$

Step 2: Substitusi nilai $r = 7$ cm dan $h = 10$ cm
$V = \pi \times (7)^{2} \times 10~cm^{3}$

Step 3: Hitung $(7)^{2}$
$(7)^{2} = 49$
$V = \pi \times 49 \times 10~cm^{3}$

Step 4: Sederhanakan $49 \times 10$
$49 \times 10 = 490$
$V = 490\pi~cm^{3}$

490\pi \text{ cm^{3}}

2. Volume bola (jari-jari 5 cm)

Step 1: Rumus volume bola
$V = \dfrac{4}{3} \pi r^{3}$

Step 2: Substitusi nilai $r = 5$ cm
$V = \dfrac{4}{3} \pi \times (5)^{3}~cm^{3}$

Step 3: Hitung $(5)^{3}$
$(5)^{3} = 125$
$V = \dfrac{4}{3} \pi \times 125~cm^{3}$

Step 4: Sederhanakan $\dfrac{4}{3} \times 125$
$\dfrac{4}{3} \times 125 = \dfrac{500}{3}$
$V = \dfrac{500}{3} \pi~cm^{3}$

\dfrac{500{3}\pi cm^{3}}

3. Volume kerucut (jari-jari 6 cm, tinggi 12 cm)

Step 1: Rumus volume kerucut
$V = \dfrac{1}{3} \pi r^{2} h$

Step 2: Substitusi nilai $r = 6$ cm dan $h = 12$ cm
$V = \dfrac{1}{3} \pi \times (6)^{2} \times 12~cm^{3}$

Step 3: Hitung $(6)^{2}$
$(6)^{2} = 36$
$V = \dfrac{1}{3} \pi \times 36 \times 12~cm^{3}$

Step 4: Sederhanakan $36 \times 12$
$36 \times 12 = 432$
$V = \dfrac{1}{3} \pi \times 432~cm^{3}$

Step 5: Sederhanakan $\dfrac{432}{3}$
$\dfrac{432}{3} = 144$
$V = 144\pi~cm^{3}$

144\pi \text{ cm^{3}}