Question

Circuitcumfurence is 30 find diameter

Answer 1

Given :-

Circumference = 30 units

To find :-

• Diameter = ?

Solution :-

Circumference = $2 \pi r$

Substitute the given values.

$\sf {\: 30 = 2\pi r}$

$\sf{ \: 30 = 2 \times \dfrac{22}{7} \times r}$

$\sf \: {\dfrac{30 \times 7}{2 \times 22} = r}$

$\sf{ \: r = 4.77 \: units}$

• $\sf{radius~=~2.77~units}$

• $\sf{Diameter~=~2r}$

$\sf{= 2 \times 4.77}$

$\sf{= 9.4 \: units}$

• $\sf{Diameter~=~9.4~units}$

Answer 2

Answer:

Circumferene of circle = 2πr given, circumference exceeds its diameter by 30 meters i.e, 2πr = d+30. But, diameter(d) = 2r 2πr = 2r+30 => 2r(π-1)

Tʜᴇʀᴇғᴏʀᴇ, Dɪᴀᴍᴇᴛᴇʀ= 9.4 ᴜɴɪᴛs

Step-by-step explanation:

Pʟs ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪᴀsᴛ ᴀɴᴅ ғᴏʟʟᴏᴡ ᴍᴇ✌️