Grass seeds

How many kg of grass seed is needed to be sowing a circular field with a diameter of 120 meters when the 1 m2 should be used 0.8 grams seeds?

Correct answer:

x =  9.05 kg

Step-by-step explanation:

D=120 m ρ=0.8 g/m2  r=D/2=120/2=60 m S=π r2=3.1416 60211309.7336 m2  m=S ρ=11309.7336 0.89047.7868 g  x=m kg=m/1000  kg=9047.7868/1000  kg=9.05 kg=9.05 kg



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar




Tips to related online calculators
Do you want to convert area units?
Tip: Our Density units converter will help you with the conversion of density units.

You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions:

  • Seeds
    kombajn-zito 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?
  • Potatoes
    zemiaky When planting potatoes there are consumed 3 500 kg of seed per 1 ha. Calculate the weight of the seed needed for fitting a square area with a side length 325 meters.
  • Water level
    pool What is the area of the water level of the pool, if after filling 25 m3 of water level by 10 cm? a) 25 m2 b) 250 m2 c) 2500 dm2 d) 25,000 cm2
  • How many
    colours How many cans of blue paint need to be bought if the interior of the garden pool, which is 5 m long, 3 m wide and 1 m deep, is to be painted? There is 1 kg of paint in each can. One can is enough for 8 m2 of area.
  • Fertilizer
    luka Meadow, with an area of 1,500 square meters, was fertilized with 12 kg of urea. Urea contains 45% nitrogen. How much nitrogen accounted for per 1 m2?
  • Cu wire
    medeny-drat Copper wire has a length l = 820 m and diameter d = 10 mm. Calculate the weight if density of copper is ρ = 8500 kg/m3. Result round to one decimal place.
  • Steel tube
    pipe1 The steel tube has an inner diameter of 4 cm and an outer diameter of 4.8 cm. The density of the steel is 7800 kg/m3. Calculate its length if it weighs 15 kg.
  • Sandbox
    sand How much cubic meters of sand is needed to fill the sandbox on the field if it has the shape of a circle with a diameter of 3 m and is 25 cm deep?
  • Copper wire
    cu_wire What is the weight in kg of copper wire 200 m long with a diameter of 0.6 cm, if the density of copper is 8.8 kg?
  • Argicultural field
    field The field has a rectangular shape with a width of 180 m and a circumference of 940 m. How many hectares acreage has field?
  • Density of the concrete
    beton Find the density of the concrete of the cuboid-shaped column has dimensions of 20 x 20 cm x 2 m if the weight of the column is 200 kg.
  • The farmer
    field The farmer would like to first seed his small field. The required amount depends on the seed area. Field has a triangular shape. The farmer had fenced field, so he knows the lengths of the sides: 119, 111 and 90 meters. Find a suitable way to determine th
  • Sunflower Field
    sunflower The trapezoidal sunflower field is located between two parallel paths which are spaced 230 meters apart. The lengths of the parallel sides of the field are 255 m and 274 m. How many tons of sunflower will come from this field if the hectare yield is 2.25
  • Ice floe
    ice_cubes What is the volume of an ice floe weighing 326 kg? The density of ice is only 920 kg/m3.
  • Iceberg
    ice What is the surface area of 50 cm iceberg (in the shape of a cuboid) that can carry a man with luggage with a total weight of 120 kg?
  • Olive seeds
    oil_lane 5 kg of oil is pressed from 100 kg of seeds. How many kgs of seeds do we need to produce 85 kg of oil?
  • Three gardens
    land Is it possible to divide a plot of land with an area of 920 m2 into three gardens in a ratio of 4: 2: 3 so that their areas are only whole multiples of square meters?