5.
A boy is cycling along a square field at the speed of 18
km/hr. In how much time will he complete 5 rounds if
the area of square field is 9604 m'?
Answers
Answered by
1
Answer-: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
Answered by
1
Answer:
time = 382 seconds
Step-by-step explanation:
Area of the square = side² = 9604 m²
side² = 9604 m²
side = √9604 m²
side = 98 m
perimeter of square = 4 × 98m = 382m
total distance travelled = 5 × 382 = 1910m
speed = 18 km/hr = 18 × 5 / 18 m/s = 5m/s
time = distance / speed
time = 1910 / 5
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