Question

part e imagine that plaque uniformly coats the walls of the blood vessel in the diagram. based on the diagram, what is the reduced area inside the blood vessel? round your answer to the nearest tenth. the equation for the area of a circle is ( a = pi r^2 ), where ( a ) is area, ( pi = 3.14 ), and ( r ) is the radius. recall that the radius is half of the diameter.

Explanation:

Step1: Find the radius of the inner circle

The diameter of the inner circle is 4, so the radius \( r = \frac{4}{2} = 2 \).

Step2: Calculate the area of the inner circle

Using the formula \( A = \pi r^2 \), with \( \pi = 3.14 \) and \( r = 2 \), we get \( A = 3.14 \times 2^2 = 3.14 \times 4 = 12.56 \).

Answer:

12.6 (rounded to the nearest tenth)