Question

If the circumference of a circle is 38 cm. Find the radius also find the area

Answer 1

Step-by-step explanation:

2*pie*r=38

2*22/7*r=38

After solving r=6.04cm

Area =pie*r*r

=22/7*6.04*6.04

114.65cm square

Answer 2

Wᴇ ʜᴀᴠᴇ ,

ᴄɪʀᴄᴜᴍꜰᴇʀᴇɴᴄᴇ 'ᴄ' ᴏꜰ ᴀ ᴄᴏᴍᴘᴀᴄᴛ ᴅɪꜱᴋ = 38ᴄᴍ .

ɪꜰ r ʙᴇ ᴛʜᴇ ʀᴀᴅɪᴜꜱ ᴛʜᴇɴ

ᑕ = 2πr

⇒ 38 = 2 × 22/ 7 × r

⇒ r = 38 × 7 / 44

⇒ r = 6.05

Now , area of compact disk = π²

= 22/7 × 6.05 × 6.05= 115.4cm².