6
Answer: CSet 4: Triangles
Explanation
David designs triangular earrings. Each earring has two equal sides of 19 centimeters and a base of 15 centimeters. What is the perimeter of one earring?
A.
26
B.
43
C.✓ Correct
53
D.
63
Detailed Explanation
Choice C is correct. An isosceles triangle has two equal sides. 1. Two equal sides: 2 × 19 = 38 centimeters Base: 15 centimeters Perimeter: 38 + 15 = 53 centimeters Therefore, the perimeter is 53 centimeters.
Key Steps:
•
The correct answer is 53
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.
D: This would give an incorrect result. Choice D is incorrect and may result from a calculation error.
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