Flower bed

The park has a rectangular flower bed with dimensions of 3.2m and 1.5m. How many rose bushes will we plant in the flower bed if 20 dm² are needed for one bush?

Correct answer:

n =  24

Step-by-step explanation:

$$\begin{gathered} a=3.2\text{ m } \\ b=1.5\text{ m } \\ {S}_1=20{\text{dm}}^2\to {\text{m}}^2=20\mathrm{/}100{\text{m}}^2=0.2{\text{m}}^2 \\ S=a\cdot b=3.2\cdot 1.5={\displaystyle \frac{24}{5}}=4\frac{4}{5}=4.8{\text{m}}^2 \\ n=S\mathrm{/}{S}_1=4.8\mathrm{/}0.2=24 \end{gathered}$$

Try another example

Related math problems and questions:

• Seeds
  The field has a rectangular shape with dimensions of 128 m and 350 m. How many kg of seed are needed for sowing if the 1 m² will consume 25 g of seeds?
• Octagon from rectangle
  From tablecloth rectangular shape with dimensions of 4 dm and 8 dm we cuts down the corners in the shape of isosceles triangles. It thus formed an octagon with area 26 dm². How many dm² we cuts down?
• Room dimensions
  Room dimensions are 5m and 3.5m. Room height is 2.85m. Paint the room (even with the ceiling). There will be 2 layers. Doors and windows have a total of 2.5 m². One box of paint is enough for 6m². How many boxes of paint are needed? How much do we pay if
• Pavilion
  The rectangular pavilion with dimensions 3.5 m and 2.75 m to be paved with square tiles of side 25 cm price of CZK 22 per 1 piece or rectangular tiles with sides of 20 cm and 15 cm in the price of CZK 11 per 1 pc. Which solution is cheaper (write its pric
• Rectangular flowerbed
  Around the rectangular flowerbed with dimensions of 5.25 m and 3.50 m, roses should be planted at the same distance from each other so that the roses are located in each corner of the flower bed and are consumed as little as possible. How far do we plant
• If one
  If one litre of pant covers an area of 5 m² how much paint is needed to cover: a) rectangular swimming pool With dimensions 4m x 3m x 2.5m (the Inside walls and the floor only) b) the Inside walls and floor of a cylindrical reservoir with diameter 3m and
• Water
  Into a full cylindrical tank high 3 m with a base radius of 2.5 m, we insert cuboid with dimensions 1.7 m, 1.3 m, 1.9 m. How many liters of water will overflow out?
• Square plate
  The locksmith cut a square metal plate with a sidelong 6 dm into two identical rectangular openings with 2.5 dm and 2 dm dimensions. Calculate the remainder of the square plate.
• Two sides paint
  The door has the shape of a rectangle with dimensions of 260cm and 170cm. How many cans of paint will be needed to paint this door if one can of paint cover 2m² of the area? We paint the doors on both sides.
• Paint cans
  How many paint cans do we need to paint the floor in two rooms with dimensions of 6.8m x 4.5m and 6m x3.8m? One can are for 6m².
• Flowerbed 2
  Around the square flower bed in a park is sidewalk 2 m wide. The area of ​​this sidewalk is 243 m². What is the area of the flowerbed?
• Wall painting
  The wall is 4 meters wide and 2 meters high. The window in the wall has dimensions of 2x1,8 meters. How many liters of color is needed to paint two-layer these walls, if the 1 m² needs 1 liters of paint?
• Scale of plan
  On the plan of the village in the scale of 1: 1000 a rectangular garden is drawn. Its dimensions on the plan are 25mm and 28mm. Determine the area of the garden in ares.
• Hectoliters
  How many hectoliters of water fits into cuboid tank with dimensions of a = 3.5 m b = 2.5 m c = 1.4 m?
• Two walls
  Calculate the surface area of a cube in m² if you know that the area of its two walls is 72 dm².
• Empty aquarium
  How much does an empty aquarium weigh with dimensions: length = 40 cm, width = 30 cm, height = 20 cm, if 1 dm² of glass weighs 300 g? Calculate its weight in kilograms.
• Bricks
  How many bricks are needed for a wall 14.5 m long, 2 m high and 45 cm thick, if 285 bricks are needed for one m ^ 3 wall?