Question

the radius of a cone 2r and hieght is 3r , then it's volume is​

Answer 1

Answer:

ANSWER

Radius of base of cone =3r

Height of cone = radius of base of cone =3r

Volume of cone

=

3

1

πr

2

h=

3

1

×π×(3r)

2

×3r

=

3

1

×π×27r

3

=9πr

Answer 2

Answer:

volume of cone =

$1 \div 3\pi {r}^{2} h \\ 1 \div 3 \times 22 \div 7 \times 2r \times 2r \times 3r \\ = 4\pi {r}^{3}$