question 6 of 10

what is the perimeter of the nonagon below?

a. 90 units
b. 92 units
c. 96 units
d. 94 units

Question

question 6 of 10

what is the perimeter of the nonagon below?

a. 90 units
b. 92 units
c. 96 units
d. 94 units

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [], "new_concepts": [ "Perimeter of Polygons" ], "current_concepts": [ "Perimeter of Polygons" ] } ## Identify the side lengths of the nonagon $$ \begin{aligned} &AB = 13 \ &BC = 8 \ &CD = 5 \ &DE = 11 \ &EF = 10 \ &FG = 9 \ &GH = 10 \ &HI = 7 \ &IA = 21 \end{aligned} $$ ## Sum the side lengths to find the perimeter $$ \begin{aligned} P &= 13 + 8 + 5 + 11 + 10 + 9 + 10 + 7 + 21 \ P &= 21 + 5 + 11 + 10 + 9 + 10 + 7 + 21 \ P &= 26 + 11 + 10 + 9 + 10 + 7 + 21 \ P &= 37 + 10 + 9 + 10 + 7 + 21 \ P &= 47 + 9 + 10 + 7 + 21 \ P &= 56 + 10 + 7 + 21 \ P &= 66 + 7 + 21 \ P &= 73 + 21 \ P &= 94 \end{aligned} $$

(A) 90 units

(B) 92 units

(C) 96 units

(D) 94 units

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Geometry", "Perimeter of Polygons" ] }

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QUESTION IMAGE

Question

Explanation:

Identify the side lengths of the nonagon

Sum the side lengths to find the perimeter

Answer: