Cutting circles

From the square 1 m sides, we have to cut the circles with a radius of 10 cm. How many discs will we cut, and how many percent will be wasted?

Correct answer:

n =  25
p =  21.4602 %

Step-by-step explanation:

r=10 cm a=1 100=100 cm S1=a2=1002=10000 cm2 D=2 r=2 10=20 cm S2=D2=202=400 cm2 n=S1/S2=10000/400=25
S3=π r2=3.1416 102314.1593 cm2 p=100 (S1n S3)/S1=100 (1000025 314.1593)/10000=21.4602%

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Our percentage calculator will help you quickly calculate various typical tasks with percentages.

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: video1

Related math problems and questions: