# Expression of a variable from the formula + sphere - math problems

#### Number of problems found: 40

• Sphere cut
A sphere segment is cut off from a sphere k with radius r = 1. The volume of the sphere inscribed in this segment is equal to 1/6 of the volume of the segment. What is the distance of the cutting plane from the center of the sphere?
• Volume of sphere
How many times does the volume of a sphere increase if its radius increases 2 ×?
• Cube and sphere
Cube with the surface area 150 cm2 is described sphere. What is sphere surface?
• Cube into sphere
The cube has brushed a sphere as large as possible. Determine how much percent was the waste.
• Sphere A2V
The surface of the sphere is 241 mm2. What is its volume?
• Sphere equation
Obtain the equation of sphere its centre on the line 3x+2z=0=4x-5y and passes through the points (0,-2,-4) and (2,-1,1).
• Hollow sphere
The steel hollow sphere floats on the water plunged into half its volume. Determine the outer radius of the sphere and wall thickness, if you know that the weight of the sphere is 0.5 kg and the density of steel is 7850 kg/m3
• Sphere radius
The surface of the sphere is 60 cm square. Calculate its radius; result round to tenth of cm.
• The volume
The volume of the sphere is 1 m3, what is its surface?
• Iron sphere
Iron sphere has weight 100 kg and density ρ = 7600 kg/m3. Calculate the volume, surface and diameter of the sphere.
• Twice of radius
How many times does the surface of a sphere decrease if we reduce its radius twice?
• Thousand balls
We have to create a thousand balls from a sphere with a diameter of 1 m. What will be their radius?
• Spherical cap
Place a part of the sphere on a 4.6 cm cylinder so that the surface of this section is 20 cm2. Determine the radius r of the sphere from which the spherical cap was cut.
• Sphere parts, segment
A sphere with a diameter of 20.6 cm, the cut is a circle with a diameter of 16.2 cm. .What are the volume of the segment and the surface of the segment?
• Cube in a sphere
The cube is inscribed in a sphere with a volume 7253 cm3. Determine the length of the edges of a cube.
• Hollow sphere
The volume of the hollow ball is 3432 cm3. What is its internal radius when the wall thickness is 3 cm?
• Spherical tank
The tank of a water tower is a sphere of radius 35ft. If the tank is filled to one quarter of full, what is the height of the water?
• The ball
The ball has a radius of 2m. What percentage of the surface and volume is another sphere whose radius is 20% larger?
• Spherical segment
The spherical segment with height h=1 has a volume V=223. Calculate the radius of the sphere of which is cut this segment.
• 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.

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Expression of a variable from the formula - math word problems. Sphere Problems.