Jawab
r = 14 : 2
= 7 cm
Tinggi kerucut = 39 - 15
= 24 cm
V.kerucut = Luas alas × tinggi : 3
= π × r × r × t : 3
= 22/7 × 7 × 7 × 24 : 3
= 22 × 7 × 24 : 3
= 154 × 24 : 3
= 3.696 : 3
= 1.232 cm³
V. tabung = Luas alas × tinggi
= π × r × r × t
= 22/7 × 7 × 7 × 15
= 22 × 7 × 15
= 154 × 15
= 2.310 cm³
V. gabungan = 2.310 + 1.232
= 3.542 cm³
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Jawab
r = 14 : 2
= 7 cm
Tinggi kerucut = 39 - 15
= 24 cm
V.kerucut = Luas alas × tinggi : 3
= π × r × r × t : 3
= 22/7 × 7 × 7 × 24 : 3
= 22 × 7 × 24 : 3
= 154 × 24 : 3
= 3.696 : 3
= 1.232 cm³
V. tabung = Luas alas × tinggi
= π × r × r × t
= 22/7 × 7 × 7 × 15
= 22 × 7 × 15
= 154 × 15
= 2.310 cm³
V. gabungan = 2.310 + 1.232
= 3.542 cm³