Question

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Answer 1

Answer:

Q. 3

$V_{cone} =565.2\: cm^3$

Q. 4

$V_{cone} =3,014.4\: cm^3$

Step-by-step explanation:

Q. 3

Radius of the cone (r) = 6 cm

Height of the cone (h) = 15 cm

$\because V_{cone} =\frac{1}{3} \pi r^2 h$

$\therefore V_{cone} =\frac{1}{3}\times 3.14 (6)^2 (15)$

$\therefore V_{cone} =\frac{1}{3}\times 3.14 (36) (15)$

$\therefore V_{cone} =565.2\: cm^3$

Q. 4

Radius of the cone (r) = 12 cm

Height of the cone (h) = 20 cm

$\because V_{cone} =\frac{1}{3}\pi r^2 h$

$\therefore V_{cone} =\frac{1}{3}\times 3.14 (12)^2 (20)$

$\therefore V_{cone} =\frac{1}{3}\times 3.14 (144) (20)$

$\therefore V_{cone} =3,014.4\: cm^3$