Question

find the area of a circle whose circumference is 66cm
​

Answer 1

Answer:

346.63947cm²

Explanation:

A=πr^2

C=2πr

Solving forA

A=C^2/4π

A=(66)^2/4π

A≈346.63947cm². HOPE THIS HELPS YOU

Answer 2

Answer:

Circumference of circle is 2 pie r

So, 2 pie r =66cm

= 66×7/22×2 = 10.5 cm

A = Pie r square = 22/7 ×10.5×10.5 =346.5cm sq

Explanation:

Circumference of circle is 2 pie r

so total circumference is given so we will take formula = total

Then r is not given so pie and 2 will shift Right hand side and the lower value will go at multiplication and upper at division.

Then you will get the answer