Question

find the diameter of the the circle whose area are 254.34 cm square take r= 3.14

Answer 1

Given,

Area of circle = 254.34 cm sq

To Find,

The diameter of the circle.

Solution,

Since we are given the area of the circle

The formula of the area of the circle is

πr² = 254.34

r² = 254.34/3.14

r² = 81

r = 9

Since, Diameter = 2*radius

Diameter = 18 cm

Hence, the diameter of the circle is 18 cm.

Answer 2

Answer:

Diameter of the circle  = 18 cm  

Given problem:

find the diameter of the the circle whose area is 254.34 cm² [take r= 3.14]

Step-by-step explanation:

given area of the circle  = 254.34 cm²  

here we need to find diameter of the circle

The area of the circle = π r²     [ here r is radius of the circle  ]

from given data  π r² = 254.34      

                     (3.14) r² =  254.34       [ ∵ π is taken as 3.14 ]

                               r² = 254.34/3.14

                               r² = 81 = 9²

                                r = 9  

Diameter of the circle  d = 2(radius) = 2(9) = 18 cm