Square sides

If the square side increases by 28%, the square circumference increases by 11.2 meters. Find the length of the original square side.

Result

a =  10 m

Solution:

4*(a+28/100a) = 11.2 + 4*a

112a = 1120

a = 10

Calculated by our simple equation calculator.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

To solve this example are needed these knowledge from mathematics:

Our percentage calculator will help you quickly calculate various typical tasks with percentages. Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar examples:

Calculate how many percent will increase the length of an HTML document, if any ASCII character unnecessarily encoded as hexadecimal HTML entity composed of six characters (ampersand, grid #, x, two hex digits and the semicolon). Ie. space as: &#x20;
2. Jane class
When asked how many students are in class, Jane said, if we increase the number of students in our class by hundred % and then add half the number of students, we get 100. How many students are in Jane's class?
3. Persons
Persons surveyed:100 with result: Volleyball=15% Baseball=9% Sepak Takraw=8% Pingpong=8% Basketball=60% Find the average how many like Basketball and Volleyball. Please show your solution.
4. Pupils
There are 350 girls in the school, and the other 30% of the total number of pupils are boys. How many pupils does the school have?
5. Girls
The children's competition was attended by 63 girls, which is 30% of all children's participants. How many children attended this competition?
6. Percent
Calculate how many % is the number 26.25 less than the number 105.
7. Fifth of the number
The fifth of the number is by 24 less than that number. What is the number?
8. Percents
How many percents is 900 greater than the number 750?
9. The ball
The ball was discounted by 10 percent and then again by 30 percent. How many percent of the original price is now?
10. Highway repair
The highway repair was planned for 15 days. However, it was reduced by 30%. How many days did the repair of the highway last?
11. Cinema tickets
Cinema sold 180 tickets this Thursday, which is 20%. Monday 14%, Tuesday 6%, Wednesday 9%, Friday 24%, Saturday 12%, and Sunday 15%. How many tickets were sold per week?
12. Competitors
In the first round of slalom fell 15% of all competitors and in the second round another 10 racers. Together, 40% of all competitors fell. What was the total number of competitors?
13. Profit gain
If 5% more is gained by selling an article for Rs. 350 than by selling it for Rs. 340, the cost of the article is:
14. Reducing number
Reducing the an unknown number by 28.5% we get number 243.1. Determine unknown number.
15. Perctentages
35% of what number is 35?
16. Percentages
52 is what percent of 93?
17. Tickets
1260 tickets sold. On the first day, 80% was sold on the second day was sold. How many tickets were sold first and how much the next day?