# An observatory is shaped like a cylinder standing on one of its bases with a dome on top. the diameter of the floor of the

An observatory is shaped like a cylinder standing on one of its bases with a dome on top. the
diameter of the floor of the observatory is 64 feet, as shown in the diagram.

which measurement is closest to the circumference of the base of the observatory in feet?
f 200.96 ft
g 3,215.36 ft
h 100.48 ft
j 401.92 ft
3 a classroom is arranged with 8 seats in the front row, 10 seats in the mid

## This Post Has 4 Comments

1. Expert says:

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

Option F. $200.96\ ft$

Step-by-step explanation:

we know that

The circumference of a circle is equal to

$C=\pi D$

in this problem

$D=64\ ft$

substitute

$C=\pi (64)=64\pi\ ft$ -----> exact value of the circumference

Find the approximate value of the circumference

assume

$\pi=3.14$

$64\pi\ ft=64(3.14)=200.96\ ft$

3. Expert says:

It says in the questions that it is 6.5?

4. jacamron says:

Option F. $200.96\ ft$

Step-by-step explanation:

we know that

The circumference of a circle is equal to

$C=\pi D$

in this problem

$D=64\ ft$

substitute

$C=\pi (64)=64\pi\ ft$ -----> exact value of the circumference

Find the approximate value of the circumference

assume

$\pi=3.14$

$64\pi\ ft=64(3.14)=200.96\ ft$