Using a ruler and pair of compasses only, construct triangle ABC in which AB = 6cm, BC = 8cm and angle ABC = 450. Drop a perpendicular from A to BC to meet line BC at M. Measure AM and AC. (4 Marks)
A measuring cylinder of base radius 5cm contains water whose level reads 6cm high. A spherical object is immersed in the water and the new level reads 10cm. Calculate the radius of the spherical object (3 Marks)
In triangle ABC below, AC = BC, AB is parallel to DE, AB = 15cm, DE = 7.5cm and BE = 6cm.
Calculate
(a) Length CE (2 Marks)
(b) Area of quadrilateral ABED. (2 Marks)
Give sin (90 – a) = 1/2 find without using trigonometric tables the value of cos a . (2 Marks)
A rectangle whose area is 96m2 is such that its length is 4metres longer than its width.
Find
(a) It dimensions (3 Marks)
(b) Its perimeter (1 Mark)
A salesman gets a commission of 2.4% on sales up to Sh. 100,000. He gets additional commission of 1.5% on sales above this. Calculate the commission he gets for sales worth Sh. 280,000. (3 Marks)
The circle below whose area is 18.05cm2 circumscribes triangle ABC where AB = 6.3cm, BC = 5.7cm and AC = 4.2cm. Find the area of the shaded part. (4 Marks)
Find x if 32x+3 + 1 = 28 (2 Marks)
Simplify: (3mks)
Mr. Owino spends 1/4 of his salary on school fees. He spends 2/3 of the remainder on food and a fifth of what is left on transport. He saves the balance. In certain month he saved Sh. 3400. What was his salary? (3 marks)