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Calculate the perimeter of the trapezium PQRS

Mathematics
WAEC 1998

Calculate the perimeter of the trapezium PQRS

  • A. 24cm
  • B. 36cm
  • C. 48cm
  • D. 72cm
  • E. 520cm
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Correct Answer: Option C
Explanation

Using Pythagora's rule for △PSM

Hyp\(^2\) = Opp\(^2\) + Adj\(^2\)

5\(^2\) = Opp\(^2\) + 4\(^2\)

→ Opp\(^2\) = 25 - 16

→ Opp = √9 = 3

base SR = 18 + 3 = 21

base PQ = 18

side PS = 5

side QR = 4

perimeter of the trapezium PQRS = 21 + 18 + 5 + 4 = 48cm


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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
Join your school's WhatsApp group
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