Find the exact area of a circle with diameter of 10 units.

10pi
100pi
5pi
25pi

D.

Step-by-step explanation:

We have been given that diameter of a circle is 20 units.

To find the area of our given circle we will use area of circle formula.

, where r represents radius of circle.

let us find the radius of our given circle by dividing diameter by 2 as diameter is 2 times radius.

Upon substituting r=5 in area of circle formula we will get,

Therefore,the exact area of our given circle is square units and option D is the correct choice.

the answer would be 0.54