Answer:
Assuming π is represented by 3.14, the correct answer is
.
Step-by-step explanation:
Because the question is asking for the area of the shaded region, you can ignore the non-shaded versions of the diagram. The formula of finding the area of a circle is
, where r is the radius of the circle. Since the radius of the shaded circle is
, you can infer that the area of the shaded region would be
=
=
.
You know 36 is 90% of a value, so it will equal 90/100.
Multiply 90/100 types x (value). Easiest way is to simplify 90/100 = 9/10.
x = 36 / 9/10
x = 360 / 9
x = 40
Therefore, the value would be 40.