How To Measure Cross Sectional Area

Compare a square to a circle of width 3 m.

How to measure cross sectional area. Cross sectional area pie d 2 2 3 14 d 2 4. Calculate moment of inertia polar moment of inertia and second moment of inertia for various shapes. This measure is known as the physiological cross sectional area pcsa and is commonly calculated and defined by the following formula developed in 1975 by alexander and vernon.

This free cross section property tool calculates moment of inertia polar moment of inertia and second moment of inertia for various shapes. The factor relating the pipe s diameter and its area is pi which is also the ratio between the pipe s diameter and circumference. To get the radius divide diameter of the pipe by 2.

The simplest approach to measuring cross sectional area is to locate a number of points on the stream bottom by measuring down from the tagline or yardstick at regular intervals see in fig. To know the shape you need to first find out the axis of symmetry of the object. To know the cross sectional area of any three dimensional object one must first understand what its shape is.

Commercially available wire cable size as cross sectional area. Estimate of circle s area 80 of square s area 80 of 9 7 2 m2. D 2 r diameter of the wire or cable.

0 75 mm 2 1 5 mm 2 2 5 mm 2 4 mm 2 6 mm 2 10 mm 2 16 mm 2. Therefore if a cross section is parallel to the top or bottom of the solid the area of the cross section is l w. R radius of the wire or cable.

Square s area w 2 3 2 9 m2. Then r d 2. The pipe s cross sectional area has a number of applications in fluid dynamics letting you calculate a pipe s flow rate or pressure drop.