no 29 digambar! pakai cara dan tidak asal ya

Dik. diameter tabung = 84cm > r = 42cm = 0,42m, tinggi tabung = 4m & tinggi kerucut = 1m
Dit. volume total ?

Jawab...

Volume tabung (V1) = phi × r^2 × t
@ V1 = 22/7 × (0,42)^2 × 4
@ V1 = 22/7 × 0,1764 × 4
@ V1 = 2,2176 m^3

Volume kerucut (V2) = 1/3 × phi × r^2 × t
@ V2 = 1/3 × 22/7 × (0,42)^2 × 1
@ V2 = 1/3 × 22/7 × 0,1764
@ V2 = 0,1848 cm^3

Vtotal = V1 + V2
@ Vtot = 2,2176 cm^3 + 0,1848cm^3
@ Vtot = 2,4024 cm^3


Semoga membantu.. ^_^