Grade - math word problems - page 488 of 968

Number of problems found: 19341

Planet Earth
What is the weight of the planet Earth if its average density is ρ = 2.5 g/cm³?
Library
We purchased new books for the library. Five-eighths were professional books, one-fifth were encyclopedias, and 231 books were dictionaries. How many professional books were there?
Energy consumption
The device is connected to 230 V and draws a 3.5 A current. Power consumption is 1932 kJ. How many minutes has this device been in operation?
The bases
The bases of the isosceles trapezoid ABCD have 10 cm and 6 cm lengths. Its arms form an angle α = 50˚ with a longer base. Calculate the circumference and area of the ABCD trapezoid.
What is bigger?
Which ball has a larger volume: a football with a circumference of 66 cm or a volleyball with a diameter of 20 cm?
Flowerbed sidewalk material
Around a round flowerbed with a diameter of 6 m should be made a sidewalk with a width of 0.5 m. How many square meters of material do we need?
Worker reward distribution
Three workers received a reward of CZK 12,600 for their joint work. They divided the money according to the work done. The first received 20% less than the second, and the third received 50% more than the first. How much did each of them get?
Worker reward distribution
Three co-workers earned a total of CZK 4,720 for repair work. They split the money so that the first got 20% more than the second, and the third got 50% more than the second. Thus, everyone got CZK 4,720.
Outfit combination calculation
Jasmine is very fashion-conscious. She wants to wear a different outfit every day. She has four different shoes, seven skirts, 8 T-shirts, and three hair ornaments. How many days can an outfit be combined each time?
Wooden cube weight
Calculate the weight of the cube, which is made of wood with a density ρ = 0.725 g / cm, the edge of the cube is 32 cm,
Ball air volume
The diameter of the ball is 65 cm. What will be the volume of air in the ball after inflating?
Aquarium water calculation
The square-shaped aquarium is 65 cm long, 24 cm wide, and 30 cm high. How many liters of water are in an aquarium if the water reaches 5 cm below its upper edge?
Circumference - bed
The perimeter of the round bed is 36 m. Find the length of the part of its circumference that belongs to the given center angles of 180°
Double price reduction
TV price has been reduced twice, first by 15% and later by another 10% of the reduced price. After this double price reduction, Peter sold the TV for 8,874 crowns. What was the original price of the TV?
Cuboid - box
The box has the shape of a cuboid with dimensions of 5 cm and 30 mm. Calculate the box's height if the cuboid's volume is 0.60 dm³. Calculate the surface area of the box. (calculation of height from the volume, calculation of area from the formula, keep t
Fence paint calculation
0.9 kg of paint is needed to paint a fence measuring 1.2 m x 9.6 m. How much paint will be required to paint a fence measuring 1.6 m x 18 m?
Annulus from triangle
Calculate the area of the area bounded by a circle circumscribed and a circle inscribed by a triangle with sides a = 25 mm, b = 29 mm, c = 36 mm.
Hockey match state
Our reporter at the Hockey World Cup during the Slovakia-Sweden match said we were in a two-goal deficit at the beginning of the third period. What was the state of the match when both teams had scored a total of 4 goals by then?
The angles ratio
The angles in the ABC triangle are in the ratio 1:2:3. Find the angles' sizes and determine what kind of a triangle it is.
Company employee distribution
The company has 250 employees. There are 30 more men than women. How many men work in the company, and how many women?

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