2
Answer: DSet 4: Triangles
Explanation
Liam is setting up a triangular tent. The two equal support poles are each 12 kilometers long, and the base is 14 kilometers. What is the total length of the tent frame?
A.
28
B.
48
C.
19
D.✓ Correct
38
Detailed Explanation
Choice D is correct. An isosceles triangle has two equal sides. 1. Two equal sides: 2 × 12 = 24 kilometers Base: 14 kilometers Perimeter: 24 + 14 = 38 kilometers Therefore, the perimeter is 38 kilometers.
Key Steps:
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The correct answer is 38
Why others are wrong:
A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.
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.
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