The area of a square field is 1476225 m square .a motorist travels along it'd boundary at 36 km/he.in how much time will he return to the starting point?
Answers
Answered by
24
Area= (side)^2
side=√(1476225)
side=1215 metre
total 4 sides= 4×1215
= 4860 m
speed =36 km/hr
=36×(5/18)
=10 m/s
speed = (distance/time)
Time required to return to the starting point is,
time = 4860/10
= 486 seconds
side=√(1476225)
side=1215 metre
total 4 sides= 4×1215
= 4860 m
speed =36 km/hr
=36×(5/18)
=10 m/s
speed = (distance/time)
Time required to return to the starting point is,
time = 4860/10
= 486 seconds
Answered by
1
Answer: The motorist will take 8 minutes and 10 seconds to rreturn to the starting point .
Step-by-step explanation:
The area of a square field = 1476225 m square
a² = 1476225
a = 1215
Perimeter of the square field = 4a = 4×1215 = 4860 meters
Speed of the motorist = 36km/hrs.
Speed = 36×(5/18) = 10m/sec
So, we have to find how much time will he return to the starting point-
Speed = distance/time
time = distance/time
time = 4860/10 = 486 seconds
= 8 minutes and 10 seconds
Therefore the motorist takes 8 minutes 10 seconds to reach the starting point.
To know more about others questions of this type click on the given link
https://brainly.in/question/6185700
https://brainly.in/question/25753018
#SPJ3
Similar questions