Question

(b) When 169 children are arranged in a squared ground, there are 13 children
along the length and 13 children along the breadth. How many more children
are needed to arrange 15/15 children along the length and breadth?
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Answer 1

Answer:

Total children is 169.

there's a square form ground.

so we know, square area is =a²

a²=169

a=13

so,now we needed to arrange l=15

and b=15

so area is now=15²

the children will be=225