7
Answer: CSet 3: Triangles (Beginner)
Explanation
PROBLEM
A triangle has sides 3, 3, and 9. What is its perimeter?
A triangle has sides 3, 3, and 9. What is its perimeter?
A.
12
B.
17
C.✓ Correct
15
D.
13
Detailed Explanation
Choice C is the best answer. Perimeter = 3 + 3 + 9 = 15
Why others are wrong:
A: 12 is incorrect because it does not satisfy the equation.
B: 17 is incorrect because it does not satisfy the equation.
D: 13 is incorrect because it does not satisfy the equation.