Length of the sides of a closed figure are 2 cm, 4 cm, 4 cm and 10 cm. What is its perimeter?

24 cm

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20 cm

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30 cm

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26 cm

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Solution

The correct option is B 20 cm
Perimeter of any closed figure is the sum of lengths of all the sides.

In this case we have a closed figure with four sides.
Length of side 1 : 2 cm
Length of side 2 : 4 cm
Length of side 3 : 4 cm
Length of side 4 : 10 cm

Perimeter of this closed figure
= Length of side 1 + Length of side 2 + Length of side 3 + Length of side 4
= 2 cm + 4 cm + 4 cm + 10 cm
= 20 cm

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