Area MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 8
A courtyard is 25 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm. The total number of bricks required is

20000
23000
25000
26000

Question No : 9
A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is ?

27%
28%
29%
30%

Question No : 10
What will be the cost of gardening 1 meter boundary around a rectangular plot having perimeter of 340 meters at the rate of Rs. 10 per square meter ?

3410
3420
3430
3440

Question No : 11
The perimeters of 5 squares are 24 cm, 32 cm, 40 cm, 76 cm and 80 cm respectively. The perimeter of another square equal in area to the sum of the area of these square is

50 cm
64 cm
124 cm
120 cm

Question No : 12
50 square stone slabs of equal size were needed to cover a floor area of 72 sq.m. Find the length of each stone slab.

110 cm
115 cm
120 cm
125 cm

Question No : 13
What are the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad ?

614
714
814
914

Question No : 14
The length of a room is 5.5 m and width is 3.75 m. Find the cost of paving the floor by slabs at the rate of Rs.800 per sq metre.

15,000
15,500
15,600
16,500