# Area Aptitude Test Paper 5

21) A 20 m long, and 15 m broad hall is surrounded by a verandah with a uniform width of 2.5 m. Find the cost of flooring the verandah at Rs. 3.50 per square meter.

1. Rs.500
2. Rs.600
3. Rs.700
4. Rs.800

Explanation:

Length of the hall = 20 m,

Breadth of hall = 15 m,

Area of hall = L x B = 20 x 15 = 300 m2

Length of hall with verandah = 20 + 2.5 + 2.5 = 25 m,

Breadth of hall with verandah = 15 + 2.5 + 2.5 = 20 m,

Area of hall with verandah = 25 x 20 = 500 m2

Area of verandah = area of hall with verandah – area of hall

= 500 – 300 = 200 m2

Cost of flooring the verandah is Rs. 3.50 per square meter.

So, the cost of flooring the entire verandah = 3.50 * 200 = Rs. 700

22) The height of a room to its semi-perimeter is 2: 5. It costs Rs. 260 to paper the walls of the room with paper 50 cm wide at Rs. 2 per meter allowing an area of 15 cm2 for doors and windows. The height of the room is

1. 2.6 m
2. 3.9 m
3. 4 m
4. 4.2 m

Explanation: 23) The area of a rectangular plot is increased by 30% and its width remains as it was before. What will be the ratio between the area of the new rectangle and the original rectangle?

1. 10: 3
2. 13: 10
3. 7: 3

Explanation:

Let the length and breadth of the rectangular plot be x and y respectively. 24) If the wheel of an engine of a train 4 meters in circumference makes seven revolutions in 4 seconds, what is the speed of the train?

1. 25 km/hr
2. 27 km/hr
3. 30 km/hr
4. 35 km/hr

Explanation:

Circumference of a circle =  25) If the height of a triangle is decreased by 40% and its base is increased by 40%. What will be the effect on its area?

1. No change
2. 16% increase
3. 8% increase
4. 16% decrease

Explanation:

Let x is the base and h is the height of the triangle. 