Respuesta :

Answer:

12.25

Step-by-step explanation:

77 divided by 22/7 = 24.5 That is the diameter

12.25 is the radius

TheUnknownScientist

Answer:

The answer is 12.25 cm

Step-by-step explanation:

Given;

  • Circumference (C) = 77 cm
  • π = 22/7

To Find;

  • Radius (r) = ?

Formula;

  • C = 2πr

2πr = C

To make subject r divide both side by 2π we get,

2πr/2π = C/2π

r = C/2π

r = 77 ÷ 2 × 22/7 cm

r = 77 × 7 ÷ 2 × 22 cm

r = 539 ÷ 44 cm

r = 12.25 cm

Thus, The radius (r) of the circle is 12.25 cm

 

-TheUnknownScientist 72