Question

A person crosses a diagonal of a square field in 3 second at the speed of 6 km/he. The area of the field ... In square meter

Answer 1

Answer:

Area of the square is 12.5 square meter

Step-by-step explanation:

Speed of the person$v=6km /hr=6 \times\frac{1000}{3600} =10/6 m/s$

Time taken to complete the diagonal is t=3

Length of the diagonal is $\frac{10}{6} \times 3=5m$

Sides of the square be x m

from Pythagoras theorem

$Diagonal ^2=x^2+x^2\\5^2=2x^2\\x^2=\frac{25}{2} \\x^2=12.5 m^2$

Area of the square is 12.5 square meter