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An arc of circle of radius 2cm subtends an angle of 60º at the centre. Find...

Mathematics
JAMB 1979

An arc of circle of radius 2cm subtends an angle of 60º at the centre. Find the area of the sector

  • A. \(\frac{2 \pi}{3}\)cm2
  • B. \(\frac{\pi}{2}\)cm2
  • C. \(\frac{\pi}{3}\)cm2
  • D. \(\pi\)cm2
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Correct Answer: Option A
Explanation

Area of a sector \(\frac{\theta}{360}\) x \(\pi\)r\(^2\)

= \(\frac{60^o}{360^o}\) x \(\pi\)2\(^2\)

= \(\frac{2 \pi}{3}\)cm2


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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Join your school's WhatsApp group
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789