What is the semimajor axis of a circle of diameter 24 cm? What is its eccentricity?

0.12 m

0

Explanation:

d = diameter of the circle = 24 cm = 0.24 m

r = radius of the circle

radius of the circle is given as

r = (0.5) d

r = (0.5) (0.24)

r = 0.12 m

L = length of the semi-major axis

For a circle, we know that

length of the semi-major axis = Radius of the circle

L = r

L = 0.12 m

Also for a circle, we know that eccentricity is 0

so e = 0