3.5 cm
circumference of a circle = 2*pi*radius or diameter*pi
C=2 pi R
The volume of any cylinder can be found by multiplying the value of Pi by the radius squared, then multiplying by the height. Since you didn't specify whether the 7cm measurement was the radius or diameter - you will have to do the calculations yourself based on the information in this answer !
A circumference of 21.99 cm
7cm; the diameter of a circle is twice its radius.
3.5 cm
circumference of a circle = 2*pi*radius or diameter*pi
C=2 pi R
The volume of any cylinder can be found by multiplying the value of Pi by the radius squared, then multiplying by the height. Since you didn't specify whether the 7cm measurement was the radius or diameter - you will have to do the calculations yourself based on the information in this answer !
A circumference of 21.99 cm
The circumference of a circle with a 7cm radius is 44cm. The area is 154cm2
66CM
The volume of a cylinder that has a radius of 3cm and a height of 7cm is 197.92cm3
A sphere with a radius of 7cm has a volume of 1,436.76cm3
A radius is half of the diameter.
The diameter is twice the radius.