8
Answer: DSet 1: Triangles (Beginner)
Explanation
PROBLEM
A triangle has sides 9, 9, and 7. What is its perimeter?
A triangle has sides 9, 9, and 7. What is its perimeter?
A.
27
B.
24
C.
28
D.✓ Correct
25
Detailed Explanation
Choice D is the best answer. Perimeter = 9 + 9 + 7 = 25
Why others are wrong:
A: 27 is incorrect because it does not satisfy the equation.
B: 24 is incorrect because it does not satisfy the equation.
C: 28 is incorrect because it does not satisfy the equation.