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A capillary tube has the shape of a cylinder, so its volume can be determined using the formula for a cylinder's volume, [tex]$V=\pi r^2 h$[/tex]. You will measure the height, [tex]$h$[/tex], later. To find the radius, measure the diameter with a pair of calipers or ruler and divide by 2. Record your answer to the nearest 0.1 cm.

Radius: [tex]\_\_\_\_ \text{ cm}[/tex]



Answer :

GinnyAnswer
To determine the radius of the capillary tube, follow these steps:

1. Measure the Diameter: Start by measuring the diameter of the capillary tube using a pair of calipers or a ruler. For this example, let's assume you measured the diameter to be 3.0 cm.

2. Calculate the Radius: The radius [tex]\( r \)[/tex] of a cylinder is half of its diameter. This can be computed using the formula:
[tex]\[ r = \frac{\text{diameter}}{2} \][/tex]
Substituting the given diameter of 3.0 cm:
[tex]\[ r = \frac{3.0 \text{ cm}}{2} = 1.5 \text{ cm} \][/tex]

3. Round to the Nearest 0.1 cm: The calculated radius is already 1.5 cm, which is to the nearest 0.1 cm.

So, the radius of the capillary tube is:
[tex]\[ \boxed{1.5} \text{ cm} \][/tex]