Mathematics Past Questions and Answers

The sum of the interior angles of a polygon is 20 right angles. How many sides does the polygon have?

A 12
B 20
C 40
D 10

Question 1642:

Find the coordinates of the mid-point of x and y intercepts of the line 2y = 4x - 8

A (2, 0)
B (1, -2)
C (-1, -2)
D (1, 2)

Question 1643:

A hunter 1.6 m tall, views a bird on top of a tree at an angle of 45°. if the distance between the hunter and the tree is 10.4 m, find the height of the tree.

A 9.0 m
B 12. 0 m
C 8.8 m
D 10.4 m

Question 1644:

A solid hemisphere has a radius of 7 cm. Find the total surface area.

A 400 cm²
B 462 cm²
C 66 cm²
D 308 cm²

Question 1645:

Find the value of a if the line 2y - ax + 4 = 0 is perpendicular to the line y + (x/4) - 7 = 0

A -4
B 4
C 8
D -8