Two patches

Peter taped the wound with two rectangular patches (one over the other to form the letter X).
The area sealed with both patches simultaneously had an area of 40cm2 and a circumference of 30cm. One of the patches was 8cm wide.
What was the width of the second patch?

Correct answer:

v2 =  4 cm

Step-by-step explanation:

S=40 cm2 o=30 cm v1=8 cm  S=av1=bv2 o=2(a+b)  a=S/v1=40/8=5 cm  b=o/2a=30/25=10  v2=S/b=40/10 cm=4 cm



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







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

 
We encourage you to watch this tutorial video on this math problem: video1   video2

Related math problems and questions: