10
Answer: BSet 5: Triangles
Explanation
A triangular running track has one side of 6 meters and another of 10 meters. If one complete lap is 26 meters, what is the length of the third side?
A.
20
B.✓ Correct
10
C.
8
D.
5
Detailed Explanation
Choice B is correct. The perimeter of a triangle is the sum of all three sides. 1. Total perimeter: 26 meters Two known sides: 6 + 10 = 16 meters Third side: 26 - 16 = 10 meters Therefore, the third side is 10 meters.
Key Steps:
•
The correct answer is 10
Why others are wrong:
A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.
C: This would give an incorrect result. Choice C is incorrect and may result from a calculation error.
D: This would give an incorrect result. Choice D is incorrect and may result from a calculation error.
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