Question

if the circumference of a circle is 308 cm find the radius of circle

Answer 1

Answer:49 cm

Step-by-step explanation:

Circumference of circle = 2πr

308 cm = 2πr

308 / 2 cm= πr

154 cm = 22r / 7 [ π = 22 / 7 ]

154 × 7 / 22 cm = r

7 × 7 cm = r

49 cm = r or radius

Answer 2

Answer:

Let the radius of the circle be x.

                         

therefore,2   ×   3.14   ×   x   =   308 cm

 or,    6.28    ×    x    =    308 cm

                 308

or,  x =      --------

                 6.28

               

                 308         10

or, x =     ----------  ×  -----

                   1            628

or, x = 4.90 (approx)