Question

Сметана содержит 20% жира. Сколько жира в 500 г сметаны? В лесопарке посажено 15 кленов, что составляет 1% всех деревьев. Сколько деревьев в лесопарке? Объем комнаты 45,36 м3. Найдите высоту потолка комнаты, если её площадь – 16,8 м2. помогите плиз,завтра контрольная ,а я на подготовке не была болела плиз**

Answer 1

1) 500*20:100=100г

 

2) 15*100:1=1500 деревьев

 

3)45,36:16,8=2,7 м высота

 

 

Answer 2

1. 100% = 500г

    20% =х

 

20*500/100=100г

 

2. 15 кленов =1%

     х кленов=100%

15*100/1=1500

 

 

 3.Непонял сам вопрос разве есть объем комнаты???? 

Answer 3

Calculation of Fat Content in Sour Cream

To calculate the amount of fat in 500g of sour cream, we need to know the percentage of fat in the sour cream. In this case, the sour cream contains 20% fat.

To find the amount of fat in 500g of sour cream, we can use the following formula:

Amount of fat = (Percentage of fat / 100) * Weight of sour cream

Substituting the values, we get:

Amount of fat = (20 / 100) * 500g

Calculating this, we find:

Amount of fat = 0.2 * 500g = 100g

Therefore, there are 100g of fat in 500g of sour cream. [[1]]

Calculation of the Number of Trees in the Park

To calculate the number of trees in the park, we need to know the percentage of maple trees in the park. In this case, 15 maple trees represent 1% of all the trees in the park.

To find the total number of trees in the park, we can use the following formula:

Total number of trees = (Number of maple trees / Percentage of maple trees) * 100

Substituting the values, we get:

Total number of trees = (15 / 1) * 100

Calculating this, we find:

Total number of trees = 1500

Therefore, there are 1500 trees in the park. [[2]]

Calculation of Ceiling Height in a Room

To find the height of the ceiling in a room, we need to know the volume and the area of the room. In this case, the volume of the room is 45.36 m³ and the area is 16.8 m².

To calculate the height of the ceiling, we can use the following formula:

Height of the ceiling = Volume of the room / Area of the room

Substituting the values, we get:

Height of the ceiling = 45.36 m³ / 16.8 m²

Calculating this, we find:

Height of the ceiling ≈ 2.7 meters

Therefore, the height of the ceiling in the room is approximately 2.7 meters. [[3]]

I hope this helps! Good luck with your exam tomorrow. If you have any more questions, feel free to ask.