Question

The circumference of a circle is 9.04cm.

Find the length of the diameter.
Give your answer rounded to 2 DP.​

Answer 1

C=pi x D
9.04= pi D
D=9.04/pi
or= 2.87

Answer 2

Question:-

The circumference of a circle is 9.04 cm. Find the length of the diameter.

Solution:-

Let the radius of a circle be r cm.

We know the formula of circumference of a circle is 2πr.

ATQ ,

2πr = 9.04

2 ×
`(22)/(7)` × r = 9.04

`(44)/(7)` × r = 9.04

r =
`(9.04 \: × \: 7)/(44)`

r =
`(63.28)/(44)`

r = 1.438

Now, as we have to find the length of the diameter ,

So, we know, Diameter (d) = 2 × radius (r)

`\therefore` d = 2r

Hence, d = 2 × 1.438 ( r = 1.438 )

d = 2.876

d = 2.88 ( approx )

The length of the diameter is 2.88 cm. [Answer]