Sphere practice problems - page 3 of 12
Formulas for a Sphere:1. Surface Area (A):
A = 4π r2
2. Volume (V):
V = 43π r3
Number of problems found: 231
- Earth's circumference
Calculate the Earth's circumference of the parallel 48 degrees and 10 minutes. - Granite ball
The granite ball has a diameter of 80 cm. The mass of 1 m³ of granite is 2900 kg. What is the mass of the ball? - The granite ball
What is the weight of a granite ball with a radius of 60 cm if 1 m³ of granite weighs 2.7 tons? - Calculate sphere
Calculate the surface area and mass of a sphere whose volume is 707.54 cm³, made of a material with a density of 7.8 g/cm³. - Sphere radius
The surface of the sphere is 60 cm square. Calculate its radius; result round to tenth of cm. - Brass ball What is the weight of a hollow brass ball, the outer diameter of which is 16 cm and the wall thickness is 2 cm, while the density of brass is ϱ = 8.5 g
- Iron ball
Calculate the radius of an iron ball with a density of 7.8 g/cm³ and a mass of 7 kg. - Earth rotation
How fast is the place on the Earth's equator moving if the Earth's radius is 6378 km? - Sphere radius
We reduce the radius of the sphere by 1/3 of the original radius. How much percent does the volume and surface of the sphere change? - Trains on Equator
The Equator. ..40075 km train. ..300m. How many trains would fit on the Equator? - 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)
- Earth parallel
Earth's radius is 6377 km long. Calculate the length parallel to latitude 75°. - Sphere growth
How many times does a volume of the sphere rise if priemer rises 10×? - Hollow sphere
Calculate the weight of a hollow dural sphere (density 2.75 g/cm³) if the inner diameter is 18 cm and the wall thickness is 3 mm. - Nickel ball weight
The hollow nickel ball has an outer diameter of 0.4 meters and an inner diameter of 0.3 meters. If the nickel density is 9000 kg/m3, determine its weight. - Acceleration and force
On a sphere weighing 100 g, which lies on a horizontal plate, a force acts in the horizontal direction, which gives it an acceleration of 20 cm/s². Find the magnitude of the force. - Cannonballs
Three cannonballs with a diameter of 16 cm landed in the castle courtyard during the battle. The castle blacksmith made balls with a diameter of 10 cm, which fit into the cannons placed on the walls. How many cannonballs did the blacksmith cast? - The Earth
The Earth's surface is 510,000,000 km². Calculates the radius, equator length, and volume of the Earth, assuming the Earth has the shape of a sphere. - Sphere aquarium volume
The aquarium has the shape of a sphere with a diameter of 36 cm. Estimate and then calculate how many liters of water will fit in the aquarium when we fill it to the brim. - Iron ball
The iron ball weighs 100 kilograms. Calculate the volume, radius, and surface if the iron's density is h = 7.6g/cm³.
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