Please help to check if my steps and ans are correct.as the ans key is different from my working.thank you.
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Question
Answer
ChiefKiasu
Radius of big semi circle = 2m
Radius of small semi circle = 1m
Perimeter of the shaded area
= Circumference of big semi circle + Circumference of small semi circle + 2
= π(2) + π(1) + 2
= 3π + 2 m #