Grade - math word problems - page 372 of 950

Number of problems found: 18986

Heat transfer
We placed a lead object weighing 0.4 kg and 250°C in 0.4 L water. What was the initial temperature of water t2 if the object's temperature and the water after reaching equilibrium was 35°C? We assume that the heat exchange occurred only between the lead o
Different 44621
Express the number 68 as this property's sum of two different summands. If you divide a larger sum by a smaller sum, will you receive a result of 3?
The volume 6
The volume of a sphere is given by the formula 4/3 πr³ (or 4/3 *pi *r³). The value of pi is approximately equal to 3.14. What is the volume of a sphere whose radius is 4 cm? (Round of the answer to the nearest hundredths. Type the value without the unit)
Grandmother
Stella's family traveled 5/8 of the distance to her grandmother's house on Saturday. They traveled 2/3 of the remaining distance on Sunday. What fraction of the total distance to her grandmother's house was traveled on Sunday?
Ring The Bell
Lucy and David challenged each other at the "Ring The Bell" game. David scored 120 points, although Lucy and David scored 235 points. How many points did Lucy score? Draw a diagram and equation to represent this situation. Use 'L' as the missing var.
Fraction of a Number
Suppose 1/2 of 1/3 of 1/4 of 1/5 of a number is 2.5. What is the number?
Fertilizer
I have 4 liters of 10% fertilizer. How much water must I add to have a 2% solution?
Quadrilateral 44561
The regular quadrilateral pyramid has a volume of 212 m³ and a base edge a = 7.2 m. Calculate the surface area and height of the pyramid.
Dimensions 44551
The base of the needle is a rectangle with dimensions of 20 cm and 10 cm, its height is 15 cm. Will the plasticine we needed to model this pyramid be enough to model two pyramids with a square base of 10 x 10 cm and a height of 15 cm?
Calculate 44541
Calculate the surface and volume of the cone if you know that the base radius r = 5 dm and the side length s = 7 dm.
Create 44531
We make a box in the shape of a cube with an edge of 12 cm. How many cm² of sheet metal do we need to create a box if we do not make the lid?
Initially 44521
The dress initially cost € 30 and was 20% cheaper on sale. What is the new price of the dress? The latest price is:
Diameter 44511
The tower's roof is a cone with a base diameter of 12 m and a height of 8 m. At least how many square meters of roofing are needed to cover it?
Metal balls
Four metal balls with a diameter of 5 cm are placed in a measuring cylinder with an inner diameter of 10 cm. What is the smallest water volume to be poured into the cylinder so that all balls are below the water level?
Three
Three pavers will pave the sidewalk in 4 days. How long does it take for two tiles to pave the same sidewalk?
Truncated pyramid
The truncated regular quadrilateral pyramid has a volume of 74 cm³, a height v = 6 cm, and an area of the lower base 15 cm² greater than the upper base's area. Calculate the area of the upper base.
Quadrilateral pyramid
The regular quadrilateral pyramid has a surface of 260 cm² and a side wall area of 40 cm². Calculate the length of the base edge and the wall height.
Tower's view
From the church tower's view at 65 m, the top of the house can be seen at a depth angle of alpha = 45° and its bottom at a depth angle of beta = 58°. Calculate the house's height and its distance from the church.
Aircraft
From the aircraft flying at an altitude of 500m, they observed places A and B (at the same altitude) in the direction of flight at depth angles alpha = 48° and beta = 35°. What is the distance between places A and B?
Grams 44441
How many grams of 70% and 45% acid must be mixed to form 300 grams of 60% acid?

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