Question

9. Arun built a cubical water tank with lid and each
outer edge is 2.5 m long. The outer surface of the
tank excluding the base is covered with square tiles
of side 25 cm long. Find the number of tiles
required.​

Answer 1

Answer:

500 tiles.

Step-by-step explanation:

Area to be covered = L.S.A. + Area of lid = 4a^2+a^2=5a^2. Now 2.5m = 250 cm

Area= 5* 250 *250 = 312500 cm^2

Area of 1 tile = 25* 25 =625cm^2

No. of tiles = Total area /Area of 1 tile =312500/625 = 500 tiles