Question

the circumference of a circle is 13.4 CM find its radius and area ​

Answer 1

▪︎formula used ⤵️

• circumference of circle = 2× pi × r

▪︎ Given-

• circumference of circle =13.4 cm

▪︎To find⤵️

• radius of given circle

▪︎solution⤵️

➡️circumference of circle =13.4 cm

= 2× pi × r = 13.4cm

= 2× 22/7 × r = 13.4cm

= r = 2.131 cm

hence required radius is 2.131cm

☆ hope it helps you ✌

Answer 2

ɢɪᴠᴇɴ:-

• ᴄɪʀᴄᴜᴍꜰᴇʀᴇɴᴄᴇ ᴏꜰ ᴀ ᴄɪʀᴄʟᴇ = 13.4ᴄᴍ

ᴛᴏ ꜰɪɴᴅ:-

• ʀᴀᴅɪᴜꜱ ᴏꜰ ᴛʜᴇ ᴄɪʀᴄʟᴇ
• ᴀʀᴇᴀ ᴏꜰ ᴛʜᴇ ᴄɪʀᴄʟᴇ

ꜰᴏʀᴍᴜʟᴀ ᴜꜱᴇᴅ:

ᴄɪʀᴄᴜᴍꜰᴇʀᴇɴᴄᴇ = $2 \times \pi \times</u><u> </u><u>r$

ꜱᴏʟᴜᴛɪᴏɴ ꜰᴏʀ ʀᴀᴅɪᴜꜱ:

$2 \times </u><u>3</u><u>.</u><u>1</u><u>4</u><u> \times x</u>= <u>1</u><u>3</u><u>.</u><u>4</u><u>ᴄ</u><u>ᴍ</u><u>$

x = 2.131ᴄᴍ