Question

A rectangular field is 90 m by 70 m . A man walks round it at the rate of 4 km/hr .What time will he take in making 5 rounds. plzz help me frnd monday is my maths exam ... plzz help

Answer 1

this might be helpful to you i hope i m right

Answer 2

$perimeter \: of \: rectangle = 2(l + b) \\ = 2(160) = 320 {m}$
$speed \: of \: man = 4 \frac{km}{hr} = 4000 \frac{m}{hr}$
$time \: taken = \frac{1600}{4000} = 0.4hr = 24min$

$total \: distance \: travelled = 320 \times 5 = 1600m$