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Hello can you please help me posted picture of question

Hello can you please help me posted picture of question-example-1

1 Answer

4 votes
Radius: r=100 mm

A=pi r^2; pi=3.14
A=3.14 (100 mm)^2
A=3.14 ( 10,000 mm^2)
A=31,400 mm^2

Answer: Option B. 31,400 mm^2
User Al Fahad
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