2
Answer: ASet 3: Triangles
Explanation
Nathan designs triangular earrings. Each earring has two equal sides of 19 miles and a base of 10 miles. What is the perimeter of one earring?
A.✓ Correct
48
B.
58
C.
24
D.
38
Detailed Explanation
Choice A is correct. An isosceles triangle has two equal sides. 1. Two equal sides: 2 × 19 = 38 miles Base: 10 miles Perimeter: 38 + 10 = 48 miles Therefore, the perimeter is 48 miles.
Key Steps:
•
The correct answer is 48
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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