The sanatorium has built a rectangular pool, 15 m long, 5 m wide and 2 m deep. 1) How many square tiles with a side of 1 in.

The sanatorium has built a rectangular pool, 15 m long, 5 m wide and 2 m deep. 1) How many square tiles with a side of 1 in. Each was required for the facing of this pool? the walls of this pool? 2) How many steps do you need to take to go around the entire pool if the step length is 50 cm?

1 question.
1) Find the area of ​​the bottom of the pool: 15m x 5m = 75 (m2)
2) We translate the side of the tile from dm to meters: 1 dm = 0.1 m;
3) Find the area of ​​1 tile in m2: 0.1m x 0.1m = 0.01 m2
4) Find the number of tiles for lining the bottom of the pool: 75: 0.01 = (move the comma to the right by 2 digits) 7500: 1 = 7500 (pcs.)
5) Find the area of ​​the walls: 5 x 2 = 10 (m2) – there are 2 such walls.
6) 15 x 2 = 30 (m2) – there are also 2 such walls
7) Total wall area: (10 + 30) x 2 = 80 (m2)
8) Find the number of tiles for lining the walls of the pool: 80: 0.01 = (move the comma to the right by 2 digits) 8000: 1 = 8000 (pcs.)

2 question.
1) Find the pool perimeter: (15 + 5) x 2 = 40 (m)
2) We translate the step length from cm to meters: 50 cm = 0.5 m;
3) Find the number of steps: 40: 0.5 = = (move the comma to the right by 1 digit) 400: 5 = 80 (w.)
Answer: 7,500 pieces, 8,000 pieces, 80 steps.