The given figure has a perimeter of 51 cm. Find the length of the curved line.

11 cm

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12 cm

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15 cm

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17 cm

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Solution

The correct option is C 15 cm
The perimeter of the given figure is sum of all sides of the figure.

Sum of other sides except the curved line = 12 + 12 + 12 = 36 cm

Length of the curved line
= perimeter of the figure - sum of all the other sides.
= 51 - 36
= 15 cm

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