Find the Length of a Radius of Each Circle $r = \sqrt { 19 }$

question 98

Multiple Choice

Find the length of a radius of each circle. Match each of the equations with length of a radius to obtain a true statement.
- $r = \sqrt { 19 }$

• A) \(x ^ { 2 } + y ^ { 2 } = 3\)
• B) \(x ^ { 2 } + y ^ { 2 } + 14 x + 6 y + 39 = 0\)
• C) \(x ^ { 2 } + y ^ { 2 } - 12 x + 20 y + 101 = 0\)
• D) \(x ^ { 2 } + y ^ { 2 } + 24 x - 32 y = 0\)

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Definitions:

Arterioles

Small blood vessels that branch off from arteries and lead to capillaries, playing a critical role in regulating blood flow and pressure.

Capillary Beds

Networks of capillaries, which are the smallest blood vessels, providing the site for the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Pulmonary Semilunar Valve

A heart valve that prevents backflow of blood from the pulmonary artery into the right ventricle.

Capillaries

Tiny blood vessels that facilitate the exchange of water, oxygen, carbon dioxide, and many other nutrient and waste chemical substances between blood and surrounding tissues.