Question

What time will it take to walk round a square field
8.1 acres in area at 4 miles per hour?​

Answer 1

Answer:

We know,

1 acre = 4046m²

Now, area of square = 8.1 acres

=side²=8.1×4046m²

=side²=32772.6m²

=side=√32772.6m²

=side =181.03m

Now, perimeter of square = 4× side

=4×181.03m

=724.12m

Now , we also know, 1mile = 1609m

speed =4miles per hour

= distance/time=4×1609m/h

=724.12m/time=4×1609m/h

=time=(724.12)/(4×1609) hours

=time=724.12/6436 hours

=time=0.11 hours

or time =6.6 minutes