Question

the length and breadth of a playground are 80 metre and 35 metre respectively how how long will a boy take to go three time around the field if he walks at rate of 1.5 metre per second​

Answer 1

Answer:

perimeter of rectangle=2(l+b)

; : =2(80+35)

=2×115

: : =230m

distance covered in three round =3×230=690m

since he walks 1.5 meter per second

time taken to travel 690m=690/1.5=460sec

=7.7min

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MARK AS BRAINLYST