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NECO Mathematics · Mensuration

Lengths and Perimeters: NECO Mathematics Past Questions and Answers

What the WAEC syllabus covers in Lengths and Perimeters

Our summary: Finding lengths and distances, including arcs, sectors and distances on the Earth's surface.

  • Use of Pythagoras' theorem, sine and cosine rules to determine lengths and distances
  • Lengths of arcs of circles, perimeters of sectors and segments
  • Longitudes and Latitudes

Syllabus content © The West African Examinations Council (WASSCE (harmonised West African syllabus)). NECO questions are matched to the WAEC syllabus topic.

NECO Mathematics questions on Lengths and Perimeters

  1. NECO 2008A chord XY of a circle with centre O and radius 5.32cm has ∠XOY = 140°. What is the length of the chord to the nearest centimetre?
  2. NECO 2005A chord 20cm long subtends an angle of 60° at the circumference of a circle, what is the diameter of the circle the nearest cm?
  3. NECO 2005Find the Iength of a diagonal of a square whose area is 288cm2.
  4. NECO 2005A is at 50°N and B is at 10°N, If A and B are on the same longitude, find the distance AS. Correct your answer to Four significant figures. (Earth radius =…
  5. NECO 2004The diagonals of a rhombus are 16cm and 30cm long. What is the perimeter of the rhombus
  6. NECO 2002What is the volume of a cube if the diagonal of one of the sides is √50 cm?
  7. NECO 2002A cone was developed from a sector of a circle with radius10cm and an angle at the centre of 108°. What is the radius of the cone?
  8. NECO 2001A chord is drawn 12cm away from the centre of a circle of radius 13cm. What is the length of the chord?
  9. NECO 2001The lengths of the sides of a triangle are 15m, 21m, and 28cm. What is the size of the angle facing the side 21m (correct to one decimal place)?
  10. NECO 2001In an acute angle-triangle XYZ, XZ = 9cm, YZ = 11cm and ∠XZY = 35° Calculate ∠YXZ, correct to the nearest degree.

Years with Lengths and Perimeters questions in DeeepSolve's question bank

From the past questions DeeepSolve holds, not a count of everything the exam body has set.

  • 2008
  • 2005
  • 2004
  • 2002
  • 2001
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