Question

find the circumference of a circle whose diameter is 17 . 5​

Answer 1

Answer :

• Circumference of a circle is 55

Given :

• Diameter = 17.5

To find :

• Circumference

Solution :

First we need to find radius

We know that,

• Radius = Diameter/2

Given Diameter is 17.5

》17.5/2

》8.75

Now we have to find the circumference,

As we know that,

• Circumference = 2πr

Where, r is radius

》Circumference = 2πr

》2 × 22/7 × 8.75

》44/7 × 8.75

》55

Hence, Circumference of a circle is 55

Answer 2

•ɢɪᴠᴇɴ-

• ᴅɪᴀᴍᴇᴛᴇʀ = 17.5

•ᴛᴏ ꜰɪɴᴅ-

• ᴄɪʀᴄᴜᴍꜰᴇʀᴇɴᴄᴇ ᴏꜰ ᴛʜᴇ ᴄɪʀᴄʟᴇ

~ᴡᴇ ᴋɴᴏᴡ ᴛʜᴀᴛ

↳ʀ = ᴅ/2

~ᴡʜᴇʀᴇ

ʀ = ʀᴀᴅɪᴜꜱ

ᴅ = ᴅɪᴀᴍᴇᴛᴇʀ

•ʀᴀᴅɪᴜꜱ↷

↳ʀ = ᴅ/2

↳ʀ = 17.5/2

↳ʀ = 8.75

~ᴡᴇ ᴀʟꜱᴏ ᴋɴᴏᴡ ᴛʜᴀᴛ

⇒ ᴄ = 2πʀ

~ᴡʜᴇʀᴇ

ᴄ = ᴄɪʀᴄᴜᴍꜰᴇʀᴇɴᴄᴇ

π = 22/7

ʀ = ʀᴀᴅɪᴜꜱ

•ꜱᴏʟᴜᴛɪᴏɴ

ᴄ = 2πʀ

ᴄ = 2×22/7×8.75

ᴄ = 44/7×8.75

ᴄ = 55

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ʜᴇɴᴄᴇ,

ᴛʜᴇ ᴄɪʀᴄᴜᴍꜰᴇʀᴇɴᴄᴇ ᴏꜰ ᴛʜᴇ ᴄɪʀᴄʟᴇ ɪꜱ 55.

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☆ᴍᴏʀᴇ☆

ᴀʀᴇᴀ ᴏꜰ ᴀ ᴄɪʀᴄʟᴇ = πʀᒾ