Question

A large planetarium in the shape of a dome is being built. When it is complete, the base of the dome will have a circumference of 87 kilometers. What area of land was required for this planetarium?

Answer 1

circumference = 2pi r
87 km = 2pi r
r= 87/ (2pi)

Now that you have r, find area using the equation
Area = pi r^2

Answer 2

so I divide 87 by 2??

Answer 3

\[\frac{ 87 }{ 2\pi }\]

Answer 4

Is it 136??

Answer 5

136.66

Answer 6

That's wrong

Answer 7

No that's not the answer. You need to find area. That's only radius
again, area = pi r^2