Question

What’s the diameter of a circle 5in

Answer 1

diameter

=

5

π

≈

1.59

to 2 dec. places

Explanation:

the circumference (C) of a circle is

∙

x

C

=

π

d

←

d is the diameter

here

C

=

5

⇒

π

d

=

5

divide both sides by

π

π

d

π

=

5

π

⇒

d

=

5

π

≈

1.59

to 2

The diameter is

35

22

.

Explanation:

The diameter of a circle is twice its radius.

We can find the radius of the circle by the equation

circumference

=

2

π

r

Now, just plug it in as

5

=

2

π

r

5

=

2

⋅

(

22

7

)

r

r

=

5

⋅

(

1

2

)

⋅

(

7

22

)

r

=

35

44

Since the diameter is twice the radius,

d

=

35

44

⋅

2

d

=

35

22

Answer 2

Answer:

About 1.591 in

Step-by-step explanation: