Answer:
Option C
Step-by-step explanation:
Given that area of a circle = 452.16 sq metres
Hence radius = [tex]\sqrt{\frac{452.16}{3.1416} } =11.9969 m[/tex]
After rounding off we get radius = 12metres
To find circumference
We know that circumference of a circle = 2pir
= [tex]2(3.1416)(11.99694)=75.3984 m[/tex]
Option C is right
Option D is right
Answer: C. 75.3984 meters
Step-by-step explanation:
The area of a circle is given by :-
[tex]A=\pi r^2[/tex], where r is radius of a circle.
Given : The area of circle = 452.16 square meters
[tex]\Rightarrow\ \pi r^2 = 452.16\\\\\Rightarrow\ r^2=\dfrac{452.16}{\pi}=\dfrac{452.16}{3.1416}\approx143.9267\\\\\rightarrow\ r=\sqrt{143.9267}=11.9969454446\approx12[/tex]
Circumference of circle is given by :-
[tex]C=2\pi r\\\\\Rightarrow\ C=2(3.1416)(12)=75.3984[/tex]
Hence, the circumference of a circle = 75.3984 meters
