1.

The length of a room is 6 m and width is 4.75 m. What is the cost of paying the floor by slabs at the rate of Rs. 900 per sq. metre.

**Answer: Option 'C'**

**Area = 6 × 4.75 sq. metre.
Cost for 1 sq. metre. = Rs. 900
Hence total cost = 6 × 4.75 × 900 = 6 × 4275 = Rs. 25650**

2.

The ratio of the areas of two squares, one having double its diagonal then the other is:

**Answer: Option 'D'**

**Lenth of the diagonals be 2x and x units.
areas are 1/2 × (2x) ^{2} and (1/2 × x^{2})
Required ratio = 1/2 × 4 x^{2} : 1/2 x^{2} = 4 : 1**

3.

The sides of a rectangle are in the ratio of 6 : 5 and its area is 1331 sq.m. Find the perimeter of rectangle.

**Answer: Option 'C'**

**Let 6x and 5x be sides of the rectangle
6x × 5x = 1331
11x**

4.

A rectangular field has to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 sq. feet, how many feet of fencing will be required?

**Answer: Option 'B'**

**Given that area of the field = 680 sq. feet
=> lb = 680 sq. feet
Length(l) = 20 feet
=> 20 × b = 680
=> b = 680/20 = 34 feet
Required length of the fencing = l + 2b = 20 + (2 × 34) = 88 feet**

5.

A rectangular room 14 m long, 12 m broad is surrounded by a varandah, 3 m wide. Find the area of the varandah?

**Answer: Option 'D'**

**Area of varandah = (l+b+2p)2p
= (14 + 12 + 6 ) 6
= 180 m**

6.

A rectangular mat has an area of 120 sq.metres and perimeter of 46 m. The length of its diagonal is:

**Answer: Option 'B'**

**rectangular area = l × b = 120 and perimeter = 2(l+b) = 46
l+b = 23
(l-b)**

7.

Area of four walls of a room is 99 m2. The length and breadth of the room are 7.5 m and 3.5m respectively. The height of the room is:

**Answer: Option 'C'**

**2(7.5+3.5)×h = 99
2(11)h = 99
22h = 99
h = 99/22 = 9/2 = 4.5 m**

8.

The perimeter of a square circumscribed about a ciecle of radius r is:

**Answer: Option 'D'**

**Each side of the square = 2r
Perimeter of the square = (4×2r) = 8r**

9.

If the radius of a circle decreased by 50% its area is decreased by:

**Answer: Option 'A'**

**Original area = πr ^{2}
New area = π(r/2)^{2} = (πr^{2})/4
Reduction in area = [(πr^{2} - (πr^{2})/4]^{2} = (3πr^{2})/4
Reduction percent = ((3πr^{2})/4 × 1/(πr^{2} × 100) % = 75%**

10.

The inner circumference of a circle race track 18 m wide is 880 m. Find the radius of the outer circle.

**Answer: Option 'C'**

**Let inner radius be r metres
Then 2πr = 640
2 × 22/7 r = 880
44/7 r = 880
r = 880 × 7/44 = 140 m**

11.

A rectangle measures 8 Cm on length and its diagonal measures 17 Cm. What is the perimeter of the rectangle?

**Answer: Option 'C'**

**Second side = √17 ^{2}-8^{2} **

= √289-64

= 15 cm

Perimeter = 2 (l+b) = 2(8+5) Cm = 2(23) = 46 Cm

12.

A rectangular courtyard 3.78 m lang and 5.25 m broad is to be paved exactly with square tiles, all of the same size. The minimum number of such tiles is:

**Answer: Option 'B'**

**
l = 378 Cm and b = 525 Cm
Maximum length of a square tile
= HCF of (378,525) = 21 Cm
Number of tiles = (378×525)/(21×21) = (18×25) = 450**

13.

The area of the largest triangle that can be inscribed in a semicircle pf rasius r Cm, is:

**Answer: Option 'C'**

**Area of the largest triangle = (1/2 × 2r × r) cm ^{2} = r^{2} cm^{2}**

14.

A rectangular parking space is marked out by painting three of its sides. If the length of the unpainted side is 9 feet, and the sum of the lengths of the painted sides is 37 feet, find out the area of the parking space in square feet? a

**Answer: Option 'A'**

**Let l = 9 ft.
Then l + 2b = 37
=> 2b = 37 - l = 37 - 9 = 28
=> b = 28/2 = 14 ft
Area = lb = 9 × 14 = 126 sq. ft.**

15.

Of the two square fields, the area of the one is 1 hectare, while anothe one is broader by 1%. There differences in area is:

**Answer: Option 'C'**

**Area of one square field = 10000 m ^{2}
10000 × 1 = 10000
Side of this field = √10000 m = 100 m
Side of another square = 101 m
Difference of areas = [ 101^{2} - 100^{2} ] m^{2}
[101+100][101-100] m^{2}
(201)(1) m^{2} = 201 m^{2}**

- Averages (200 Questions with Explanation): Quantitative Aptitude Test
- Boats and Streams :(31) MCQs with Answers
- Calender and Dates : MCQs with Answers Download PDF
- Co Ordinate Geometry - Problems and Solutions
- Clocks and Time
- Compound Interest : Aptitude Test (65 Questions with Explanation)
- L.C.M and H.C.F : Aptitude Test
- Problems on Areas : Aptitude Test
- Problems on Volumes
- Number System : Aptitude Test (200 Questions with Explanation)
- Partnership : Aptitude Test
- Percentage : Aptitude Test
- Permutations Combinations
- Profit and Loss
- Probability -Aptitude
- Ratios and Proportions (114 Questions with Explanation)
- Simplifications
- Simple Interest
- Time and Work :(96) MCQs with Answers
- Time and Distance :(25) MCQs with Answers
- Problems on Trains
- Trignometry Formulae : Quantitative Aptitude Test
- Latest model Quant Questions for SBI PO - Practice Test 1
- Latest model Quant Questions for SBI PO - Free online Practice Test 2
- Aptitude Test - Practice Test - 1 - For All Competitive Exams
- Twisted and Difficulty Level Quantitative Aptitude Questions for NICL AO Mains 2017
- Mensuration : Area - Volume - Quantitative Aptitude
- Metric Distance Conversion with Whole Number Values Online Quiz
- Metric Conversion with Decimal Values: Two-Step Problem Online Quiz

- RRB NTPC and RRB Group D Free Model Papers in Tamil Telugu Hindi and English
- Current Affairs in Telugu - RRB NTPC and RRB Group D Model Papers in Telugu
- Arithmetic and Maths in Telugu MCQs - RRB NTPC and RRB Group D Model Papers in Telugu
- Biology MCQs - RRB NTPC and RRB Group D Model Papers in Telugu
- Reasoning Practice Tests in Telugu - RRB NTPC and RRB Group D Model Papers in Telugu
- Science and Technology MCQs - RRB NTPC and RRB Group D Model Papers in Telugu
- Chemistry MCQs in Telugu - RRB NTPC and RRB Group D Model Papers in Telugu
- Physics MCQs in Telugu - RRB NTPC and RRB Group D Model Papers in Telugu
- Indian Polity - Constitution & Administration in Telugu - RRB NTPC and RRB Group D Model Papers in Telugu
- Indian Geography in Telugu MCQs - RRB NTPC and RRB Group D Model Papers in Telugu
- Andhra Pradesh - Geography in Telugu - RRB NTPC and RRB Group D Model Papers in Telugu
- General Knowledge MCQs - RRB NTPC and RRB Group D Model Papers in Telugu
- General Studies in Telugu - APPSC TSPSC UPSC - MCQs
- Andhra Pradesh Economics Question and Answers - MCQs