Question

Составить математическое выражение. длина вестибюля в поликлинике 15 м, а ширина 8 см. пол вестибюля выложили плиткой прямоугольной формы размером 3 дм на 2 дм. сколько плиток для этого потребовалось. чему равна площадь вестибюля. выразить площадь вестибюля в квадратных дециметрах. чему равна площадь плитки. сколько плиток потребовалось.

Answer 1

15м=150дм
8м=80дм
3*2=6 дм2 площадь плитки
150*80=12000дм2 площадь вестибюля
12000:6=2000 плиток понадобилось

Answer 2

(1500•8):(30•20)=12000:60=200 плиток

Answer 3

Calculation of the Number of Tiles Required

To calculate the number of tiles required to cover the floor of the vestibule, we need to find the area of the vestibule floor and the area of each tile.

The length of the vestibule is given as 15 meters, and the width is given as 8 centimeters. However, to perform the calculation, we need to convert the width to meters.

Converting the width from centimeters to meters: - 1 meter = 100 centimeters - Therefore, 8 centimeters = 8/100 = 0.08 meters.

Now we can calculate the area of the vestibule floor: - Area = length × width - Area = 15 meters × 0.08 meters - Area = 1.2 square meters.

The size of each tile is given as 3 decimeters (dm) by 2 decimeters (dm). To calculate the area of each tile, we need to convert the dimensions to meters.

Converting the dimensions of the tile from decimeters to meters: - 1 meter = 10 decimeters - Therefore, 3 decimeters = 3/10 = 0.3 meters, and 2 decimeters = 2/10 = 0.2 meters.

Now we can calculate the area of each tile: - Area = length × width - Area = 0.3 meters × 0.2 meters - Area = 0.06 square meters.

To find the number of tiles required, we divide the area of the vestibule floor by the area of each tile: - Number of tiles = Area of vestibule floor / Area of each tile - Number of tiles = 1.2 square meters / 0.06 square meters - Number of tiles = 20 tiles.

Therefore, 20 tiles are required to cover the floor of the vestibule.

Calculation of the Area of the Vestibule in Square Decimeters

To express the area of the vestibule in square decimeters, we need to convert the area from square meters to square decimeters.

Converting the area from square meters to square decimeters: - 1 square meter = 100 square decimeters - Therefore, 1.2 square meters = 1.2 × 100 = 120 square decimeters.

Therefore, the area of the vestibule is 120 square decimeters.

Calculation of the Area of Each Tile

The area of each tile is already calculated as 0.06 square meters.

Therefore, the area of each tile is 0.06 square meters.

Calculation of the Total Number of Tiles Required

To calculate the total number of tiles required, we need to convert the area of the vestibule floor and the area of each tile to the same unit.

Converting the area of the vestibule floor from square meters to square decimeters: - 1 square meter = 100 square decimeters - Therefore, 1.2 square meters = 1.2 × 100 = 120 square decimeters.

Now we can calculate the total number of tiles required: - Number of tiles = Area of vestibule floor (in square decimeters) / Area of each tile (in square decimeters) - Number of tiles = 120 square decimeters / 0.06 square decimeters - Number of tiles = 2000 tiles.

Therefore, the total number of tiles required is 2000 tiles.