Sidewalk 63134

A 2m wide sidewalk is built around the circular fountain. The radii of the circles that delimit the path on both sides are 4:3. What area in square meters does this sidewalk occupy?

Correct answer:

S =  87.9646 m2

Step-by-step explanation:

r1=r2+2 r1=34 r2  r1=r2+2 r1=4/3 r2  r1r2=2 3r14r2=0  Pivot:Row1Row2 3r14r2=0 r1r2=2  Row231 Row1Row2 3r14r2=0 0.33r2=2  r2=0.333333332=6 r1=30+4r2=30+4 6=8  r1=8 r2=6  S=π r12π r22=3.1416 823.1416 62=87.9646 m2



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







Tips for related online calculators
Do you have a system of equations and looking for calculator system of linear equations?

 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: