7
Answer: BSet 1: Triangles
Explanation
Sebastian designs triangular earrings. Each earring has two equal sides of 8 miles and a base of 7 miles. What is the perimeter of one earring?
A.
11
B.✓ Correct
23
C.
13
D.
33
Detailed Explanation
Choice B is correct. An isosceles triangle has two equal sides. 1. Two equal sides: 2 × 8 = 16 miles Base: 7 miles Perimeter: 16 + 7 = 23 miles Therefore, the perimeter is 23 miles.
Key Steps:
•
The correct answer is 23
Why others are wrong:
A: This would give an incorrect result. Choice A 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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