Question

225 square shaped mosaic tiles, each of area 1 square decimetre exactly cover a square shaped verandah. How long is each side of the square shaped verandah?

Answer 1

Area of one tile = 1 sq. decimeter

Area of 225 tiles = 225 sq.decimeter

225 square tiles exactly covers the square shaped verandah.

∴ Area of 225 tiles = Area of the verandah

Area of the verandah = 225 sq.decimeter

side x side = 15 x 15 sq.decimeter

side = 15 decimeters

Length of each side of verandah = 15 decimeters.