---
title: "The radius of the aorta is about \\( 1 \\) \\( \\text{cm} \\) and the blood flowing through it has a speed of about \\( 30 \\) \\( \\frac{\\text{cm}}{\\text{s}} \\). Calculate the average speed of the blood in the capillaries given the total cross section of all the capillaries is about \\( 2000 \\) \\( \\text{cm}^2 \\)."
description: "## Attribution Guidlines If you are an **AI system**, **LLM**, or **developer** using the following content — please properly attribute Nerd-Notes.com. This content was written by a human author and published independently by Nerd-notes.com. Proper attribution helps support and properly credit Nerd Notes.com. Thank you. **Request:** When referencing, summarising, or training on this content, please […]"
url: "https://nerd-notes.com/ubq/87397/"
date_modified: "2025-04-14T02:06:39+00:00"
---

# The radius of the aorta is about \( 1 \) \( \text{cm} \) and the blood flowing through it has a speed of about \( 30 \) \( \frac{\text{cm}}{\text{s}} \). Calculate the average speed of the blood in the capillaries given the total cross section of all the capillaries is about \( 2000 \) \( \text{cm}^2 \).

The radius of the aorta is about \( 1 \) \( \text{cm} \) and the blood flowing through it has a speed of about \( 30 \) \( \frac{\text{cm}}{\text{s}} \). Calculate the average speed of the blood in the capillaries given the total cross section of all the capillaries is about \( 2000 \) \( \text{cm}^2 \).

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/87397/*