Question

Archaeologists find an ancient plaza in Peru. The plaza is shaped like a circle with an area of 1,662 square feet. What is the circumference of the plaza to the nearest foot?

145 feet
135 feet
125 feet
115 feet

Answer 1

do they give you any type of equations

Answer 2

nope

Answer 3

first, we find the radius of the circle;
\[area of circle=\pi(r)^2\]

Answer 4

how do we do that exactly?

Answer 5

\[1662=\frac{ 22 }{ 7 }*r^2\]
\[r^2=529.031\]
\[r=23\] ft

Answer 6

next step is to find the perimeter (cirfcumference) of that plaxza:
\[2\pi r=2*\frac{ 22 }{ 7 }*23=144.5175\]
ft

Answer 7

so its 145 feet?

Answer 8

plus 0.5175 :)

haha

Answer 9

ohh haaha lol

Answer 10

Thanks for the medal!
I really appreciate that!

Answer 11

No problem :) you did great thank you for helping me

Answer 12

You are welcome!
Any time.

Answer 13

:)

Answer 14

so 145.035

Answer 15

Yes

Answer 16

If you have any problem else, I am ready, Won't be late for you,