Câu 3: trang 156 - toán tiếng anh lớp 5A rectangular tank has inner dimensions of 4m (length) x 3m...

e) The tank has a total volume of 30m3. Since 80% of the tank is filled with water, the volume of water is 24m3. To convert this volume to liters, we multiply by 1000, giving us 24,000 liters of water in the tank. The base of the tank has an area of 12m2 (4m x 3m), so the height of the water level in the tank can be calculated by dividing the volume of water by the base area, resulting in a water level height of 2 meters.

b) To calculate the height of the water level in the tank, we need to divide the volume of water by the area of the base of the tank. The area of the base of the tank can be calculated by multiplying the length and width together: 4m x 3m = 12m2. To find the height of the water level, we divide the volume of water (24m3) by the area of the base (12m2): 24m3 / 12m2 = 2m. Therefore, the height of the water level in the tank is 2 meters.

a) To calculate the volume of water in the tank, we first need to calculate the total volume of the tank. The total volume of the tank can be calculated by multiplying the length, width, and height together: 4m x 3m x 2.5m = 30m3. Since 80% of the tank is filled with water, we can calculate the volume of water by multiplying the total volume of the tank by 80%: 30m3 x 0.8 = 24m3. To convert cubic meters to liters, we need to multiply by 1000 (since 1m3 = 1000 liters). Therefore, the total volume of water in the tank is 24m3 x 1000 = 24000 liters.