Ted booked a cab and went to his uncle’s home. His trip progress is shown in the figure. What is the perimeter of the path taken by Ted?

5.9 km

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6.9 km

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7.9 km

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None of the above

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Solution

The correct option is D
None of the above

Perimeter is defined ONLY for closed 2-dimensional figures. So, the distance covered by the cab, i.e. length of the path taken is equal to (1.5 + 3.7 + 1.7) km = 6.9 km. But perimeter for the figure shown is not defined since it is not closed.

So, the answer is D.

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