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Ответ:

lolamegananne

13.03.2021

1) 37,680 mm

2) 56.5 cm

3) 9198.1 ft

4) 427.9 m

Step-by-step explanation:

1. volume = π $r^{2}$ h

⇒ v = 3.14 x $20^{2}$ x 30

⇒ v = 37680

2. volme = V=π $r^{2} \frac{h}{3}$

⇒ v = 3.14 x $3^{2} x \frac{6}{3}$

⇒ v = 56.52

3. volume = $\frac{4}{3}$ × π × $r^{3}$

⇒ v = $\frac{4}{3}$ × 3.14 x $13^{3}$

⇒ v = 9198.106

4. volume of cylinder = π $r^{2}$ h

v = 3.14 x $6^{2}$ x 12

v = 51.14

volume of cone = $\frac{1}{3}$ π $r^{2}$ h

v = $\frac{1}{3}$ x 3.14 x $6^{2}$ x 10

v = 376.8

volume total = volume clinder + colume cone

v = 51.14 + 376.80

v = 427.94

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