Form 1 Revision Exercise

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.

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

In a 4×400 m relay competition, a team of athletes each completed their round in 45 sec, 43 sec, 44 sec and 45 see respectively.

If the race started at 1:35:31 p.m., find the time when the team completed the race.

• 3:44:28 pm

• 1:38:28 pm

• 1:38:28 am

• 3:44:31 pm

Three business partners, Kosgei, Kimani and Atieno contributed Ksh 1,750,000 towards an investment.

Kosgei contributed 20% of the money. Kimani and Atieno contributed the remainder in the ratio 3:5 respectively.

(a) (i) Calculate the amount of money Kimani contributed

Three business partners, Kosgei, Kimani and Atieno contributed Ksh 1,750,000 towards an investment.

Kosgei contributed 20% of the money. Kimani and Atieno contributed the remainder in the ratio 3:5 respectively.

(a) (ii) Find the ratio of the contributions by the three partners.

Three business partners, Kosgei, Kimani and Atieno contributed Ksh 1,750,000 towards an investment.

Kosgei contributed 20% of the money. Kimani and Atieno contributed the remainder in the ratio 3:5 respectively.

(b) The money earned a compound interest at a rate of 8% per annum. After 3 years, the partners withdrew the interest and donated 10% to a charitable organisation.

The partners then shared the remainder in the ratio of their contributions.

Calculate the amount of money, to the nearest shilling, that Atieno received.

• 3

Two bells ring at intervals of 35 and 42 minutes respectively. The bells ring together at 8.48 a.m. Determine the time when the bells will ring together again

• 12.18 a.m.

• 12.18 p.m.

• 3.30 p.m.

• 2.10 p.m.

The size of two interior angles of an irregular polygon each measures 90⁰. All the other remaining interior angles each measure 150⁰. Determine the number of sides of the polygon.