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1

In the diagram above ∠OPQ is?

  • A. 90o
  • B. 53o
  • C. 36o
  • D. 26o
View Answer & Discuss (1) JAMB 2008
2

An arc subtends an angle of 50o at the center of circle of radius 6cm. Calculate the area of the sector formed

  • A. 100/7
  • B. 80/7
  • C. 110/7
  • D. 90/7
View Answer & Discuss JAMB 2010
3

The angle of a sector of a circle of diameter 8cm is 135°. Find the area of the sector [Take \(\pi\) = 22/7].

  • A. \(9\frac{3}{7}cm^2\)
  • B. \(12\frac{4}{7}cm^2\)
  • C. \(18\frac{6}{7}cm^2\)
  • D. \(25\frac{1}{7}cm^2\)
View Answer & Discuss (12) WAEC 1989
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4

In the diagram, KS is a tangent to the circle centre O at R and ∠ROQ = 80o. Find ∠QRS.

  • A. 90o
  • B. 80o
  • C. 50o
  • D. 40o
View Answer & Discuss (7) WAEC 2004
5

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
View Answer & Discuss (3) JAMB 1979
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