15. Raju buys 9 square tiles each with a side of 50 cm. He lays them in two different ways as shown below: (i) What is the perimeter of first arrangement as shown in Fig. (a)? (ii) What is the perimeter of second arrangement as shown in Fig. (b)? (iii) When is the perimeter more and by how much?

15. Raju buys 9 square tiles each with a side of 50 cm. He lays them i

1.	15. Raju buys 9 square tiles each with a side of 50 cm. He lays them in two different ways as shown below: (i) What is the perimeter of first arrangement as shown in Fig. (a)? (ii) What is the perimeter of second arrangement as shown in Fig. (b)? (iii) When is the perimeter more and by how much?
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