Waec Mathematics Past Questions and Answers

Question 1731:

• WAEC 2017

An arc of a circle of radius 7.5cm is 7.5cm long. Find, correct to the nearest degree, the angle which the arc subtends at the centre of the circle. [Take \(\pi = \frac{22}{7}\)]

A. 29\(^o\)
B. 57\(^o\)
C. 65\(^o\)
D. 115\(^o\)

Question 1732:

• WAEC 2017

Water flows out of a pipe at a rate of 40\(\pi cm^2\) per seconds into an empty cylinder container of base radius 4cm. Find the height of water in the container after 4 seconds.

A. 10 cm
B. 14 cm
C. 16 cm
D. 20 cm

Question 1733:

• WAEC 2017

The dimensions of water tank are 13cm, 10cm and 70cm. If it is half-filled with water, calculate the volume of water in litres

A. 4.55 litres
B. 7.50 litres
C. 8.10 litres
D. 9.55 litres

Question 1734:

• WAEC 2017

If the total surface area of a solid hemisphere is equal to its volume, find the radius

A. 3.0cm
B. 4.5cm
C. 5.0cm
D. 9.0cm

Question 1735:

• WAEC 2017

Which of the following is true about parallelogram?

A. Opposite angles are supplementary
B. Opposite angles are complementary
C. Opposite angles are equal
D. Opposite angles are reflex angles