Measurement: Length, Area, and Volume

Front

What is length?

Back

Length refers to the distance between two points and can be measured.

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Instruments used to measure length include:

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Vernier caliper, steel tape measure, ruler, and tape measure.

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Common mistakes when using a ruler include:

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End error, gap error, and parallax error.

Front

What is area?

Back

Area refers to the amount of surface something occupies or covers.

Front

Standard formula for calculating the area of a rectangle:

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A = length x breadth.

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Standard formula for calculating the area of a triangle:

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A = 1/2 x base x height.

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Standard formula for calculating the area of a circle:

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A = πr².

Front

What is the SI unit of area?

Back

The SI unit of area is square meter, written as m².

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How to find the area of irregular shapes?

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Use a grid, count whole squares, and match parts to make wholes.

Front

What is volume?

Back

Volume refers to the amount of space an object occupies.