# Circle and hexagon

Calculate the radius of a circle whose circumference is 8.4 cm longer than the circumference of the inscribed regular hexagon.

Correct result:

r =  29.66 cm

#### Solution:

2•pi•r = 8.4 + 6r

2•π•r = 8.4 + 6•r

0.283185r = 8.4

r = 29.662556

Calculated by our simple equation calculator.

We would be very happy if you find an error in the example, spelling mistakes, or inaccuracies, and please send it to us. We thank you!

Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

#### You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem:

## Next similar math problems:

• Circumference - a simple
What is the ratio of the circumference of any circle and its diameter? Write the result as a real number rounded to 2 decimal places.
• Fifth of the number
The fifth of the number is by 24 less than that number. What is the number?
• Supplementary angles
One of the supplementary angles are three times larger than the other. What size is larger of supplementary angles?
• Family parcels
In father will he divided the land so that the older son had three bigger part than younger son. Later elder son gave 2.5 ha field to younger and they had both the same. Determine the area of family parcel.
• Three figures - numbers
The sum of three numbers, if each is 10% larger than the previous one, is 662. Determine the figures.
• Blackberries
Daniel, Jolana and Stano collected together 34 blackberries. Daniel collected 8 blackberries more than Jolana, Jolana 4 more than Stano. Determine the number blackberries each collected .
• Summerjob
Three students participated in the summerjob. Altogether they earn 1780, -. Peter got a third less than John and Paul got 100,- more than Peter. How much got every one of them?
• Slope
Find the slope of the line: x=t and y=1+t.
• Find the 9
Find the missing angle in the triangle and then name triangle. Angles are: 95, 2x+15, x+3
• 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?
• 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?
• Girls
The children's competition was attended by 63 girls, which is 30% of all children's participants. How many children attended this competition?
• Equation with mixed fractions
2 3/5 of 1430+? = 1900. How to do this problem
• Rabbits 3
Viju has 40 chickens and rabbits. If in all there are 90 legs. How many rabbits are there with Viju?
• Candy
Peter had a sachet of candy. He wanted to share with his friends. If he gave them 30 candies, he would have 62 candies. If he gave them 40 candies, he would miss 8 candies. How many friends did Peter have?
• Ice skates
Ice skates were raised twice, the first time by 25%, the second time by 10%. After the second price, their cost was 82.5 euros. What was the original price of skates?
• 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?