A school playground is rectangular in shape with length $= 120 m$ and breadth $= 90 m$ . Some school boys run along the boundary of the play-ground and make $15$ complete rounds in $45$ minutes. How much distance they run during this period?

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Solution

Given
Length of rectangular playground $= 120 m$
Breadth of rectangular playground $= 90 m$
Hence, the perimeter of rectangular playground can be calculated as follows :
Perimeter $= 2$ (Length $+$ Breadth)
Perimeter $= 2 (120 m + 90 m)$
$= 2 \times 210 m$
We get,
$= 420 m$
Hence, distance covered by the boy in one round $= 420 m$
Therefore, total distance covered by the boy to complete $15$ rounds can be calculated as follows :
Distance $= 15 \times$ Perimetre
$= 15 \times 420$
We get,
$= 6300 m$
Therefore, distance covered by the boys to completer $15$ rounds is $6300 m$

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A school playground is rectangular in shape with length =120 m and breadth =90 m. Some school boys run along the boundary of the play-ground and make 15 complete rounds in 45 minutes. How much distance they run during this period?

A school playground is rectangular in shape with length $= 120 m$ and breadth $= 90 m$ . Some school boys run along the boundary of the play-ground and make $15$ complete rounds in $45$ minutes. How much distance they run during this period?