Jawaban:

C. 30

Penjelasan dengan langkah-langkah:

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)

=2×210 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× Perimetre

=15×420

We get,

=6300 m

Therefore, distance covered by the boys to completer 15 rounds is 6300 m

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