1
Answer: ASet 2: Triangles
Explanation
A triangular running track has one side of 15 inches and another of 23 inches. If one complete lap is 72 inches, what is the length of the third side?
A.✓ Correct
34
B.
24
C.
17
D.
44
Detailed Explanation
Choice A is correct. The perimeter of a triangle is the sum of all three sides. 1. Total perimeter: 72 inches Two known sides: 15 + 23 = 38 inches Third side: 72 - 38 = 34 inches Therefore, the third side is 34 inches.
Key Steps:
•
The correct answer is 34
Why others are wrong:
B: This would give an incorrect result. Choice B 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.
🎯 Keep Practicing!
Master all sections for your best SAT score