Question

If the volume of a right circular cone of height 9 cm is 49 pie cm", find the diameter of its
base.​

Answer 1

Step-by-step explanation:

since volume of a cone=1/3πr²h

given 49π=1/3πr²×9

49=3r²

r²=49/3

r=7/√3

so diameter of base = 13/√3

Answer 2

Step-by-step explanation:

volume given is 49π

height = 9cm

radius = r

volume of cone is 1/3πr²h

1/3πr²(9)=49π

3r²=49

r=7/√3

so diameter is

14/√3