ɪғ ᴛʜᴇ ᴄɪʀᴄᴜᴍғᴇʀᴇɴᴄᴇ ᴏғ ᴀ ᴄɪʀᴄᴜʟᴀʀ sʜᴇᴇᴛ ɪs 154 M ғɪɴᴅ ɪᴛs ʀᴀᴅɪᴜs? ᴀɴsᴡᴇʀs ᴡɪʟʟ ʙᴇ ᴅᴇʟᴇᴛᴇᴅ ɪғ, ✯ɪʀʀᴇʟᴇᴠᴀɴᴛ ᴀɴsᴡᴇʀ ✯ᴄᴏᴘɪ

Question

ɪғ ᴛʜᴇ ᴄɪʀᴄᴜᴍғᴇʀᴇɴᴄᴇ ᴏғ ᴀ ᴄɪʀᴄᴜʟᴀʀ sʜᴇᴇᴛ ɪs 154 M ғɪɴᴅ ɪᴛs ʀᴀᴅɪᴜs?

ᴀɴsᴡᴇʀs ᴡɪʟʟ ʙᴇ ᴅᴇʟᴇᴛᴇᴅ ɪғ,
✯ɪʀʀᴇʟᴇᴠᴀɴᴛ ᴀɴsᴡᴇʀ
✯ᴄᴏᴘɪᴇᴅ
✯sᴘᴀᴍᴍᴇᴅ
✯ᴀᴅᴅɪᴛɪᴏɴᴀʟ ɪɴғᴏʀᴍᴀᴛɪᴏɴ ʀᴇϙᴜɪʀᴇᴅ.​
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Anna 3 weeks 2021-09-05T06:42:06+00:00 2 Answers 0 views 0

Answers ( )

  1. Ava
    0
    2021-09-05T06:43:12+00:00

    Area of the circle => π × radius²=154m

    or, radius² =154×(7/22)=49 m

    or , radius = √(49) = 7m

    Radius = 7m

    Hope this helps you .

    0
    2021-09-05T06:44:05+00:00

    ━━━━━━━━━━━━━━━━━━━━━━━━━

    Also Find the area of the sheet.

    \text{\large\underline{\purple{Solütiõn:-}}}

    • let r be the radius of circular sheet.

    circumference of circular sheet = 154 m

    ⟹ \bold{2π r = 154}

    ⟹ 2 ×\dfrac{22}{7}× r = 154

    ⟹[tex]\bold{ r = 154 ×}[/tex] \dfrac{1}{2} × \dfrac{7}{22}

    ⟹ r = \dfrac{7 × 7}{2}

    ⟹ r = \dfrac{49}{2}\bold{ r = 24.5m}

    Hence radius of circular sheet is 24.5 m.

    area of the circular sheet \bold{ - π r²}

    = \dfrac{22}{7} \bold{(24.5)²}

    = \dfrac{22}{7} \bold{24.5×24.5}

    = \bold{22×3.5\:× 24.5}

    = \bold{1886.5\: m².}

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