tell what the diameter (d) and radius(r) of each circle is by using this information
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The circumference of a circle if its radius is 13cm is: 81.68 cm
Area = pi*132 = 530.9291585 or 531 square cm
By units do you mean the volume specification? If so, the volume will be in cubic centimetres. 13cm x 13cm x 3cm = 13x13x3 = 507 cubic centimetres or 507 cc.
A cone with a base of 10cm and a height of 13cm has a volume of 340.34cm3
13cm