Brick wall

Garden 70 m long and 48 m wide should surround with wall 2.1 meters high and 30 cm thick. Wall will be built on the garden ground. How many will we need bricks if to 1 m³ is required approximately 300 bricks?

Correct answer:

n =  44378

Step-by-step explanation:

a=70 m b=48 m c=2.1 m h=30 cm m=30/100  m=0.3 m  S1=a b=70 48=3360 m2 S2=(a2 h) (b2 h)=(702 0.3) (482 0.3)=8223925=32891425=3289.56 m2  V=(S1S2) c=(33603289.56) 2.1=147.924 m3  n=300 V=300 147.924=44378

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

Showing 2 comments:
Math student
unprecise - need to know if wall needs to be build ON garden-ground (like in the solution) or if wall should enclose whole garden - in that case:
2.1 * ( 2 * 48 + 2 * 70 ) * 0.3 * 300 = 44604 does the trick

Dr Math
thank you, we corrected the wording of the problem. But your solutions 44604  tricks is also wrong because in the corners some bricks are not counted.


Tips to related online calculators
Do you want to convert area units?
Do you know the volume and unit volume, and want to convert volume units?

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

Related math problems and questions:

  • The wall
    wall_mur We have to build a cuboid wall with dimensions base 30 cm and 45 cm and height 3.25 meters. Calculate how many we need bricks if we spend 400 pieces of bricks to 1 m3 of wall?
  • Bricks pyramid
    The_Great_Pyramid How many 50cm x 32cm x 30cm brick needed to built a 272m x 272m x 278m pyramid?
  • Bricks
    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 m3 wall?
  • Bricks wall
    tehly There are 5000 bricks. How high wall thickness of 20 cm around the area which has dimensions 20 m and 15 m can use these bricks to build? Brick dimensions are 30 cm, 20 cm and 10 cm.
  • Brick wall
    bricks What is the weight of a solid brick wall that is 30 cm wide, 4 m long and 2 m high? The density of the brick is 1500 kg per cubic meter.
  • Pool
    swimming-pool The swimming pool is 10 m wide and 8 m long, and 153 cm deep. How many hectoliters of water are in it if the water is 30 cm below its upper edge?
  • Wall builders
    bricks If 12 men can build a wall 398 metres long in 48 days, how long would it take 33 men to build a wall 347 metres long? Answer to 3 decimal places.
  • Insulate house
    byty The property owner wants to insulate his house. The house has these dimensions 12, and 12 m is 15 m high. The windows have 6 with dimensions 170 and 150 cm. Entrance doors are 250 and 170 cm in size. How many square meters of polystyrene does he need?
  • Four prisms
    hranol4b Question No. 1: The prism has the dimensions a = 2.5 cm, b = 100 mm, c = 12 cm. What is its volume? a) 3000 cm2 b) 300 cm2 c) 3000 cm3 d) 300 cm3 Question No.2: The prism base is a rhombus with a side length of 30 cm and a height of 27 cm. The height of t
  • Bricks
    cihla_brick Openings in perforated bricks occupy 10% and brick has dimensions 30 cm, 15 cm and 7.5 cm. Calculate a) the weight of a perforated bricks, if you know that the density of the full brick material is p = 1800 kg/m3 (1.8 kg/dm3) b) the number of perforated
  • Garden
    zahon Rectangular garden 31 meters 40 centimeters long and 20m30cm wide adjacent with the shorter side with another (fenced) garden and on one longest side is 1 meter wide gate. How many meters of fence is needed to buy? (Estimate, calculate, verify a test calc
  • Freezer
    mraznicka The freezer has the shape of a cuboid with internal dimensions of 12 cm, 10 cm, 30 cm. A layer of ice of 23 mm thick was formed on the inner walls (and on the opening) of the freezer. How many liters of water will drain if we dispose the freezer?
  • Rainfall
    cumulus How many liters of water did fell in a 32m long and 8m wide garden, if 8mm of rain fell?
  • Water tank 2
    tank Water tank cuboid is 12 meters long and 6.5 meters wide and 1.2 meters high. How many hectoliters are in the tank when it is filled to 81%?
  • Painting
    malovka The room is long 50 meters and wide 60dm and 300 cm high. Calculate how much it will cost painting if area of windows and doors is 15% of the total area. One square meter cost 50cents.
  • Gutter pipe
    odkvap_zlab How many m² of sheet metal is required to produce a 12 m long and 18 cm wide gutter, if 7% bend is required?
  • The aquarium
    akvarko The aquarium is 120 cm long, 70 cm wide and 96 cm high. How high does the water reach if they filled 168l of water into the aquarium?