Question

racetrack is in the form of a ring whose inner circumference is 352 and Outer circumference is 396 find the widthof the track​

Answer 1

Answer:

7

Step-by-step explanation:

Given:Inner circumference = 352

          Outer circumference = 396

          Width = ?

we know that

circumference = 2πr

so,

     352 = 2πr₁

     352 = 2*22/7*r₁

     352 = 44/7*r₁

     352*7/44 = r₁

     56 = r₁

and,

       396 = 2πr₂

       396 = 2*22/7*r₂

       396 = 44/7*r₂

       396*7/44 = r₂

       63 = r₂

so,

     width = r₂ - r₁

               = 63 - 56

               = 7