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The length of a pencil is 18 cm and its radius is 0.4 cm. Find the ratio of its length to its diameter.

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Question

The length of a pencil is 18 cm and its radius is 0.4 cm. Find the ratio of its length to its diameter.

Sum
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Solution

Length of the pencil = 18 cm

Radius of the pencil = 0.4 cm

The diameter of the pencil is:

Diameter = 2 × Radius = 2 × 0.4 = 0.8 cm.

The ratio of the length to the diameter is:

`"Ratio" = "Length"/"Diameter" = 18/0.8`

`"Ratio" = 180/8 = 22.5`

The ratio of the length to the diameter is: 22.5 : 1

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