Respuesta :

Felizes16

Answer:

20.  300π m³

21.  457 1/3 π cm³

Step-by-step explanation:

20. r = 10 ÷ 2 = 5

V = 5² × 12 × π = 25 × 12π=300π m³

21. r = 14 ÷ 2 = 7

V = \frac{4}{3} \pi 7x^{3}

V = 457 1/3 π cm³

ley00

Answer:

6785.84 m3

Step-by-step explanation:

Volume = height * radius squared * pi

Volume = 15 * 12^2 * 3.14

Volume is approximately 6785.84

Answer may vary due to the approximate value of pi