7
Answer: ASet 2: Triangles
Explanation
James wants to build a triangular fence for a farm. Two sides measure 9 meters and 9 meters. If James has exactly 34 meters of fencing material, what must be the length of the third side?
A.✓ Correct
16
B.
8
C.
26
D.
6
Detailed Explanation
Choice A is correct. The perimeter of a triangle is the sum of all three sides. 1. Total perimeter: 34 meters Two known sides: 9 + 9 = 18 meters Third side: 34 - 18 = 16 meters Therefore, the third side is 16 meters.
Key Steps:
•
The correct answer is 16
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.
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