Answer: Diameter = 28 cm

               Radius = 14 cm

Step-by-step explanation:

Area of the circle is given by pi*r^2

According to the condition,

pi*r^2 = 616

=> r^2 = 616*7/22 ( The value of pi can be taken as 22/7)

=> r = 14

Therefore, Radius = 14 cm

Diameter = 2*Radius

Diameter = 28 cm

Answer:

Diameter = 28 cm

Radius = 14 cm

Circumference = 88 cm

Step-by-step explanation:

Area = 616

[tex]\pi \: r {}^{2} [/tex]

22/7 x r² = 616

r² = 616/22 × 7

r² = 196

r = 14 cm

Diameter = 2 x Radius

Diameter = 28 cm

Circumference of circle =

[tex]2\pi \: r[/tex]

2 × 22/7 x 14 =88cm