Question

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Answer 1

Please find below solution

Answer 2

Answer:

Formula:- Sum of interior angle = (n-2)×180°

(i)- For 11 sided:

Sum of interior angle = (11-2)×180°

= 9 × 180°

= 1620° ans.

(ii)- For 20 sided:

Sum of interior angle = (20-2)×180°

= 18 × 180°

= 3240° ans.

Step-by-step explanation:

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