Question

Running at a uniform speed along the sides of a square of area
10^4m?, a boy covers one round of the square in 60 sec. What is the
distance covered in first30 s?​

Answer 1

Explanation:

5^4 answer

I think it is correct

Answer 2

Answer:

200 meters.

Explanation:

Area of square = 10⁴ m² = 10000 m²

∴ One side of the square = √10000m² = 100 m

One round around the square = 4 x 100 m = 400 m

It is given that the boy covers 400 m in 60 seconds,

and we know that $speed = \frac{distance}{time}$,

∴ Speed = (400/60) ms⁻¹ = $\frac{20}{3}$ ms⁻¹

⇒ Distance = Speed x Time

                   = $\frac{20}{3}$ ms⁻¹ x 30 s

                   = 200 m

∴ The boy covered 200 m in the first 30 seconds.

Hope this helps!