Question

A red blood cell has a diameter of approximately 0.00075 centimeter. Suppose one of the arteries in your body has a diameter of 0.0456 centimeter. How many red blood cells could fit across the artery?

Answer 1

About `60` red blood cells will fit across the artery.

Explanation:

The small measurements in this question are what make it seem confusing at first. The word 'approximately' means it is not an accurate measurement.

Think about a similar question with easier values.
A tin has a diameter of `16` cm.
How many candles with a diameter of `2` cm can fit across it?

This is clearly a division `" "rarr16 div 2 =8` candles.

In the question given, it is also a division.

"How many times will `0.00075` fit into `0.0456?`"

`0.0456 div 0.00075 = (0.0456cm)/(0.00075cm)`

`= 0.0456/0.00075 xx 100000/100000 = 4560/75`

`=60.8`

About `60` red blood cells will fit across the artery.