Question

The circumference of the base of right circular cone is 22cm &it's height is equal to the diameter of the base find its volume

Answer 1

given- circumference = 22cm

now,

• 22= 2×(22/7)×radius
• 22×7/22×2 =radius
• radius =7/2cm
• now volume of cone
• =1/3 × 22/7× r^2 ×h
• 1/3×22/7×(7/2)^2 ×(2×7/2)
• =89.83 cm^3

Answer 2

Answer:

89.83 cm^3

Step-by-step explanation:

The circumference of cone =2×pie×radius

22 = 2×22/7×radius

22×7=2×22×radius

154/44=radius

radius=3.5cm

diameter =2×radius

=2×3.5

=7cm

Height = Diameter = 7cm

Volume of cone = 1/3×pie×radius^2×height

=1/3×22/7×(3.5)^2×7

=22×(3.5)^2/3

=22×12.25/3

=269.50/3

=89.83 cm^3