Answer:
Q. 3
[tex]V_{cone} =565.2\: cm^3 [/tex]
Q. 4
[tex] V_{cone} =3,014.4\: cm^3 [/tex]
Step-by-step explanation:
Q. 3
Radius of the cone (r) = 6 cm
Height of the cone (h) = 15 cm
[tex]\because V_{cone} =\frac{1}{3} \pi r^2 h[/tex]
[tex]\therefore V_{cone} =\frac{1}{3}\times 3.14 (6)^2 (15)[/tex]
[tex]\therefore V_{cone} =\frac{1}{3}\times 3.14 (36) (15)[/tex]
[tex]\therefore V_{cone} =565.2\: cm^3 [/tex]
Q. 4
Radius of the cone (r) = 12 cm
Height of the cone (h) = 20 cm
[tex]\because V_{cone} =\frac{1}{3}\pi r^2 h[/tex]
[tex]\therefore V_{cone} =\frac{1}{3}\times 3.14 (12)^2 (20)[/tex]
[tex]\therefore V_{cone} =\frac{1}{3}\times 3.14 (144) (20)[/tex]
[tex]\therefore V_{cone} =3,014.4\: cm^3 [/tex]