Answer:
area of a circle is = 78.5units²
Explanation:
to evaluate for the area of a circle whose diameter = 10
π = 3.14
recall that the area of a circle is = πr²
since we were given diameter
note that diameter = 2 x radius
radius = diameter / 2
radius = 10/2
radius = 5units
area of a circle is = πr²
area of a circle is = 3.14 x (5)²
area of a circle is = 3.14 x 25
area of a circle is = 78.5units²