An error 2% in excess is made while measuring the side of a square. The percenta

Question

An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

Options:

A . 2%

B . 4.04%

C . 4%

D . 2.02%

Answer: Option B

100 cm is read as 102 cm. ∴ A1 = (100 x 100) cm2 and A2 (102 x 102) cm2. (A2 - A1) = [(102)2 - (100)2] = (102 + 100) x (102 - 100) = 404 cm2. ∴ Percentage error = ❨ 404 x 100 ❩% = 4.04%

Was this answer helpful ?

Next Question

Submit Comment/FeedBack

More Questions on This Topic :

Question 1. A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the....sq. m, then what is the width of the road?

Question 2. The diagonal of a rectangle is √41 cm and its area is 20 sq. cm. The perimeter of the rectangle must be:....

Question 3. The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the ....then the area of the park (in sq. m) is:

Question 4. A man walked diagonally across a square lot. Approximately, what was the percent saved by not walking along the edges?....

Question 5. What is the least number of squares tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?....

Question 6. The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is:....

Question 7. The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:....

Question 8. A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:....

Question 9. The ratio between the perimeter and the breadth of a rectangle is 5 : 1. If the area of the rectangle is 216 sq. cm, wha....216 sq. cm, what is the length of the rectangle?

Question 10. If the side of a square is increased by 25%, then how much percent does its area get increased?....

Latest Videos

Chapter 1 - GLOBAL STEEL SCENARIO & INDI Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Latest Test Papers

Chapter 3.1 : Overview of Finance & Acco Chapter 3 : Finance & Accounts SAIL E0 - GFM 2024

Chapter 2.1 : Overview Chapter 2 : Materials Management SAIL E0 - GFM 2024

Chapter 1.1 : Personnel Functions- An ov Chapter 1 : Personnel Management SAIL E0 - GFM 2024

GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024

CBT Mixed Test 1 GPOE/GPA SAIL E0 2024

Menu

Popular Courses

Search

Submit Comment/FeedBack

More Questions on This Topic :

Latest Videos

Latest Test Papers