6
Answer: ASet 4: Triangles
Explanation
Scarlett wants to build a triangular fence for a farm. Two sides measure 18 feet and 25 feet. If Scarlett has exactly 56 feet of fencing material, what must be the length of the third side?
A.✓ Correct
13
B.
3
C.
6
D.
23
Detailed Explanation
Choice A is correct. The perimeter of a triangle is the sum of all three sides. 1. Total perimeter: 56 feet Two known sides: 18 + 25 = 43 feet Third side: 56 - 43 = 13 feet Therefore, the third side is 13 feet.
Key Steps:
•
The correct answer is 13
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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