Mathematics Paper 1A

• 63

• 343

• 256

• 64

A rectangular floor of a room measures 5.4 m long and 4.2 m wide. The room is to be covered with square tiles. Calculate the minimum number of square tiles that can be used to cover the floor.

• 64

• 63

• 378

• 65

The line 2y + x = 1 is perpendicular to a line L. Line L passes through point (2,−1), Determine the equation of L in the form y = mx + c, where m and c are constants.

• y = 2x - 5

• y = 2x + 3

• y = 2x - 3

• y = 1/2 x - 4

The sum of the interior angles of a regular polygon is 1260⁰. Find the size of each exterior angle of the polygon.

• 60⁰

• 40⁰

• 120⁰

• 140⁰

Given that sin(θ+30°) = cos2θ, find the value of cos(θ+40°)

• 0.8660

• 0.5736

• 0.5

• 0.9

• 3.5

• 3.502

• 4.45 cm²

• 25.67 cm²

• 21.22 cm²

• 149.55 cm²

A vertical electric pole was erected 6.4m from the foot of a vertical fencing pole on the same horizontal level. The fencing pole is 2m high.

The angle of elevation of the top of the electric pole from the top of the fencing pole is 30°. Determine the height of the electric pole correct to 1 decimal place.

• 3.7m

• 5.2m

• 5.7m

• 7.5m