Question

Area of a square feild is 48400m square.if a man runs round the field in 5min, how many km per hour does he run.

Answer 1

48400m =48.4 km

side = square of 48.4 km = 2.2 km

perimeter = 2.2 ×4 =8.8

1 hr = 60 min

60 ÷5 =12

speed per km= 8.8 ×12

= 105. 6 km per hr

Answer 2

Step-by-step explanation:

To find the side :

$\implies$ $\sf{A=s^2 }$

$\implies$ $\sf{48400=s^2 }$

$\implies$ $\sf{s=\sqrt{48400} }$

$\implies$ $\sf{s=220m }$

To find the perimeter :

$\implies$ $\sf{P=4×S}$

$\implies$ $\sf{P=4×220 }$

$\implies$ $\sf{P=880m }$

Now, using Direct Variation to find Distance :

if 5 min, 880 m

then 60 mins, x m

$\implies$ $\sf{x×5=60×880 }$

$\implies$ $\sf{ x={\Large\frac{60×880}{5}}}$

$\implies$ $\sf{x=10,560m }$

$\implies$ $\boxed{\sf{ x=10km\:560m }}$

in 1 hour, a man runs 10km 560m

_______________________________________

$<b><i><marquee> Mark as Brainliest :)$