Waec Mathematics 2016 Past Questions and Answers

Question 46:

• WAEC 2016

The ratio of the exterior angle to the interior angle of a regular polygon is 1:11. How many sides has the polygon?

A. 30
B. 24
C. 18
D. 12

Question 47:

• WAEC 2016

Halima is n years old. Her brother's age is 5 years more than half of her age. How old is her brother?

A. \(\frac{n}{2} + \frac{5}{2}\)
B. \(\frac{n}{2}\) - 5
C. 5 - \(\frac{n}{2}\)
D. \(\frac{n}{2}\) + 5

Question 48:

• WAEC 2016

In the diagram MN is a chord of a circle KMN centre O and radius 10cm. If < MON = 140^o, find, correct to the nearest cm, the length of the chord MN.

A. 19cm
B. 18cm
C. 17cm
D. 12cm

Question 49:

• WAEC 2016

An object is 6m away from the base of a mast. If the angle of depression of the object from the top of the mast is 50^o, find, correct to 2 decimal places, the height of the mast.

A. 8.60m
B. 7.83m
C. 7.51m
D. 7.15m

Question 50:

• WAEC 2016

From the diagram, which of the following is true?

A. M + n + p = 180^o
B. M + n = 180^o
C. M = p + n
D. N = m + p