A square room has a tiled floor with 81 square tiles How man

A square room has a tiled floor with 81 square tiles. How many tiles are along an edge of the room? A square mosaic is made of small glass square. If there are 196 small square in the mosaic. How many are along an edge ?

Solution

7)

There are 81 tiles.

Which is the square floor is of dimention 9 cross 9.

So, total number of tiles in edge is 9+9 +( 9-2)+(9-2) = 18+14 = 32 tiles.

8)

If thereare 196 small mosiacs on sqaure floor, the floow is of dimension 14, since 14*14 = 196

So, there are 14+14+ (14-2)+(14-2) = 56-4=52 tiles on the edge of floor