A boy is cycling along a square field at the speed of 18 km/h .I how much time will he complete if the area of square field is 9604 m²
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ᴀʀᴇᴀ ᴏғ sǫᴜᴀʀᴇ ғɪᴇʟᴅ = 9604 ᴍ²
sɪᴅᴇ = √9694 ᴍ² = 98 ᴍ
ᴘᴇʀɪᴍᴛᴇʀ ᴏғ ᴡʜᴏʟᴇ sǫᴜᴀʀᴇ ɢʀᴏᴜɴᴅ = 98 ᴍ × 4 = 392 ᴍ
ɪɴ ᴏɴᴇ ʀᴏᴜɴᴅ ʜᴇ ʜᴀs ᴛᴏ ᴄᴏᴠᴇʀ 392 ᴍ ᴛʜᴇɴ ɪɴ 5 ʀᴏᴜɴᴅs = 392 ᴍ × 5
= 1960 ᴍ
sᴘᴇᴇᴅ = 18 ᴋᴍ/ʜ
ᴄᴏɴᴠᴇʀᴛɪɴɢ ɪɴᴛᴏ ᴍ/s = 18* 5/18 ᴍ/s
= 5 ᴍ/s
ᴛɪᴍᴇ = ᴅɪsᴛᴀɴᴄᴇ / sᴘᴇᴇᴅ
= 1960 / 5 = 392s
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ᴀʀᴇᴀ ᴏF sQᴜᴀʀᴇ Fɪᴇʟᴅ = 9604 ᴍ²
sɪᴅᴇ = √9694 ᴍ² = 98 ᴍ
ᴘᴇʀɪᴍᴛᴇʀ ᴏғ ᴡʜᴏʟᴇ sǫᴜᴀʀᴇ ɢʀᴏᴜɴᴅ = 98 ᴍ × 4 = 392 ᴍ
ɪɴ ᴏɴᴇ ʀᴏᴜɴᴅ ʜᴇ ʜᴀs ᴛᴏ ᴄᴏᴠᴇʀ 392 ᴍ ᴛʜᴇɴ ɪɴ 5 ʀᴏᴜɴᴅs = 392 ᴍ × 5
= 1960 ᴍ
sᴘᴇᴇᴅ = 18 ᴋᴍ/ʜ
ᴄᴏɴᴠᴇʀᴛɪɴɢ ɪɴᴛᴏ ᴍ/s = 18* 5/18 ᴍ/s
= 5 ᴍ/s
ᴛɪᴍᴇ = ᴅɪsᴛᴀɴᴄᴇ / sᴘᴇᴇᴅ
= 1960 / 5 = 392 seconds.
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