Waec Mathematics Past Questions and Answers

Question 766:

• WAEC 2001

A sector of a circle radius 14 cm subtends an angle 135° at the center of the circle. What is the perimeter of the sector? Take \(\pi = \frac{22}{7}\)

A. 47cm
B. 61cm
C. 88cm
D. 231cm

Question 767:

• WAEC 2001

In the diagram, MN||PQ, |LM| = 3cm and |LP| = 4cm. If the area of ∆LMN is 18cm², find the area of the quadrilateral MPQN

A. 3cm²
B. 6cm²
C. 14cm²
D. 24cm²

Question 768:

• WAEC 2001

The diagram shows a triangular prism of length 7cm. The right - angled triangle PQR is a cross section of the prism |PR| = 5cm and |RQ| = 3cm. What is the area of the cross-section?

A. 4 cm²
B. 6cm²
C. 15cm²
D. 20cm²

Question 769:

• WAEC 2001

The diagram shows a triangular prism of length 7cm. The right - angled triangle PQR is a cross section of the prism |PR| = 5cm and |RQ| = 3cm. What is the volume of the prism?

A. 28cm²
B. 42cm²
C. 70cm²
D. 84cm²

Question 770:

• WAEC 2001

A solid cylinder of radius 7cm is 10 cm long. Find its total surface area.

A. \(70\pi cm^2\)
B. \(189\pi cm^2\)
C. \(210\pi cm^2\)
D. \(238\pi cm^2\)