Question

find the diameter of the circle whose area is 92.5 CM square

Answer 1

Find the diameter of the circle whose area is 92.5 cm^2 .

since , we know that ,

area of circle = πr^2

according to the given statement :

area of circle = 92.5 cm^2

Find the radius :
----------------------

πr^2 = 92.5

r^2 = 92.5 × 7 / 22

r^2 = 647.5 / 22 = 29.4

r = √29.4 = 5.4 ( approx. )

Find the diameter :
--------------------------

diameter of circle = 2r

= 2× 5.4 = 10.8 cm

Answer : diameter = 10.8 cm

-------------------------------------------------------