Answer:
12.57
Step-by-step explanation:
the formula for the area of a circle is [tex]\pi r^{2}[/tex]
the diameter is 2 times the radius, so dividing it by 2 gives you a radius of 2
substitute the 2 for the r in the formula and solve
[tex]\pi 2^{2}[/tex]
4[tex]\pi[/tex]
≈12.57
Answer:
A = 12.56637
Step-by-step explanation:
[tex]A = \pi * r^2\\\pi = 3.14159[/tex]
[tex]r = diameter / 2\\4 / 2 = 2[/tex]
A = 3.14159 * (2^2)
= 12.56637
