Can u help..i need it for school tomorrow. ?

Question

Im really not that good in math so if u cld please give me some pointers and answers here ill be glad. And please tell me how u solved it.

The area of a circle is 49pi. Fine in terms of pi, the circumfrence of the circle.

Answer 1

ok well you need your equations....

A= pi x r^2

and C= 2 x pi x r

so if you find r^2 by dividing pi from the area, 49...you can find r by finding the square root of that.

then plug all you know into the circumference equation

Answer 2

14pi.

A=r^2pi.    

C=2rpi.

Square root 49 and get rid of the pi. Then multiply that(the radius{7}) by 2. Then put a pi next to it(*pi). That'll give u 14pi.