Find the length of the radius the circumference and the area

Find the length of the radius, the circumference, and the area of the circle. Use 3.14 for pi.

Solution

Circle is the perfectly round shape, which makes them perfect for hoola-hooping!

Every circle has a center, which is a point that lies exactly at the... well... center of the circle. A circle is a shape where distance from the center to the edge of the circle is always the same:

Distance from the center to the edge of the circle is called radius.

It is denoted by r.

The diameter is the length of the line through the center that touches two points on the edge of the circle.

Diameter is denoted by d

The circumference is the distance around a circle

C = d

d = 2r

C = 2r

Area of the circle = r²