Question

Hitunglah volume luas gabungan tersebut

Answer 1

V kerucut 1 = ⅓ × ( π × r × r ) × t
= ⅓ × ( 3,14 × 12 × 12 ) × 16
= ⅓ × 452,16 × 16
= ⅓ × 7.234,56
= 2.411,52 Cm³

V tabung = π × r × r × t
= 3,14 × 12 × 12 × 10
= 452,16 × 10
= 4.521,6 Cm³

V kerucut 2 = ⅓ × ( π × r × r ) × t
= ⅓ × ( 3,14 × 12 × 12 ) × 9
= ⅓ × 452,16 × 9
= ⅓ × 4.069,44
= 1.356,48 Cm³

V 3 bangun = 2.411,52 + 4.521,6 + 1.356,48 = 8,289.6 Cm³