Length + work - math problems

Number of problems found: 11

  • A paint
    cylinder_cut A paint tin is a cylinder 12cm and height 22 cm. Leonardo, the painter, drops his stirring stick into the tin and it disappears. Work out the maximum length of the stick.
  • 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.
  • The bricklayer
    murar The bricklayer built a six-meter base of the fence in 3 hours. How long does it take to build a 14 m long base?
  • Inclined plane
    naklonena_rovina 1. How much work W we have to do to pull a body weighing 200 kg along an inclined plane with a length of 4 m to a total height of 1.5 m. 2. Find the force we need to exert to do this if we neglect frictional resistance. 3. Find the force we would need if
  • 3 pupils
    meter 3 pupils cleaned 10 meters of the stream in 1 hour. How many meters of the stream will clean 18 students in 4 hours?
  • Painters
    malovka2 Six of the painters paint 90 m of the fence in five hours. For how long would the four painters paint a 45-meter fence? How many meters fence painted painters 5 for two hours?
  • Highway tunnel
    tunnel The highway tunnel was built from two ends in the north-south direction. The average daily performance of the "northern party" rasters was higher than the average daily power of the "southern party" of the rasters. After 55 business days, both parties met
  • The creek
    potok Workers cleaned the creek within 3 days. The first day cleanse one-fifth the creek's length, the next day 40% of the stream's length, and the third day 8 km length of the creek. How long is a creek?
  • Hall
    zamkova_dlazba Rectangular hall will have pave by square tiles with a side length 15 cm. The hall has length 18 meters and width 3 m. How many tiles need to buy if 2 percent of the amount is disrupted during the work?
  • Three drivers
    gas_car Three driversdriving the same direction found that they have same amounth of gasoline. The first is enough to go 6 km, 4 km second and third 3km. Gasoline they divided so all three just drove to the nearest petrol station. How many km away was a petrol st
  • Locomotive
    locomotive Locomotive pulled a train permanent load of 200 kN horizontally along the track of 5km. What work it done?

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