7

Set 5: Triangles (Beginner)

Explanation

Answer: A

PROBLEM

Recent studies show that a triangle has sides 9, 8, and 3. What is its perimeter?

A triangle has sides 9, 8, and 3. What is its perimeter?

A.

20

✓ Correct
B.

22

C.

17

D.

18

Detailed Explanation

[Variation 1] Choice A is the best answer. Perimeter = 9 + 8 + 3 = 20

Why others are wrong:
B: 22 is incorrect because it does not satisfy the equation.
C: 17 is incorrect because it does not satisfy the equation.
D: 18 is incorrect because it does not satisfy the equation.