Metal rails

Dad needs to improve the edges of the wooden boxes - to be reinforced with metal rails. How many cms of rails will he need if the box has the shape of a prism with the length of the edges 70cm 70cm and 120cm?

Result

x =  1040 cm

Solution:

a=70 cm b=70 cm c=120 cm  o=2⋅ (a+b)=2⋅ (70+70)=280 cm  x=2⋅ o+4⋅ c=2⋅ 280+4⋅ 120=1040 cm x1=4⋅ (a+b+c)=4⋅ (70+70+120)=1040 cm x1=xa=70 \ \text{cm} \ \\ b=70 \ \text{cm} \ \\ c=120 \ \text{cm} \ \\ \ \\ o=2 \cdot \ (a+b)=2 \cdot \ (70+70)=280 \ \text{cm} \ \\ \ \\ x=2 \cdot \ o + 4 \cdot \ c=2 \cdot \ 280 + 4 \cdot \ 120=1040 \ \text{cm} \ \\ x_{1}=4 \cdot \ (a+b+c)=4 \cdot \ (70+70+120)=1040 \ \text{cm} \ \\ x_{1}=x

Try another example


Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Following knowledge from mathematics are needed to solve this word math problem:

Next similar math problems:

  1. Flowerbed
    garden_16 In the park there is a large circular flowerbed with a diameter of 12 m. Jakub circulated him ten times and the smaller Vojtoseven times. How many meters each went by and how many meters did Jakub run more than Vojta?
  2. Gloves
    rukavice I have a box with two hundred pieces of gloves in total, split into ten parcels of twenty pieces, and I sell three parcels. What percent of the total amount I sold?
  3. Playground
    playground The land for the construction of the school playground has the shape of a rectangle with a shorter side of 370 m. Its other side is 260 m longer. How many meters of the fence does the school need to buy on the fencing playground?
  4. Let x
    rectangle Let x represent one quantity. State what that quantity represents. Express the second quantity in terms of x. The length of the rectangle is 4 inches less than 8 times the width.
  5. Drawer
    drawer The rectangular face of a drawer has a perimeter of 108 cm and a width of 18cm. Find the length and the area of the rectangular face of the drawer.
  6. Circle r,D
    bavlnka Calculate the diameter and radius of the circle if it has length 52.45 cm.
  7. Mine
    minetower Wheel in traction tower has a diameter 4 m. How many meters will perform an elevator cabin if wheel rotates in the same direction 89 times?
  8. Conference
    conference 148 is the total number of employees. The conference was attended by 22 employees. How much is it in percent?
  9. Class
    children_2 In a class are 32 pupils. Of these are 8 boys. What percentage of girls are in the class?
  10. Apples 2
    jablko James has 13 apples. He has 30 percent more apples than Sam. How many apples has Sam?
  11. Equation
    rovnice_3 Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
  12. Number
    percent What number is 20 % smaller than the number 198?
  13. Circle
    circle_1 What is the radius of the circle whose perimeter is 6 cm?
  14. Unknown number
    nums Identify unknown number which 1/5 is 40 greater than one tenth of that number.
  15. Down syndrome
    gene Down syndrome is one of the serious diseases caused by a gene mutation. Down syndrome occurs in approximately every 550-born child. Express the incidence of Down's syndrome in newborns at per mille.
  16. Inequation
    inequalities Solve the inequation: 5k - (7k - 1)≤ 2/5 . (5-k)-2
  17. New refrigerator
    lednice New refrigerator sells for 1024 USD, Monday will be 25% discount. How much USD will save, and what will be the price?