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According to the velocity formula v = s / T, what is correct in the following statement? A. The speed of an object is proportional to its distance B. The speed of an object is inversely proportional to time C. The speed of an object is directly proportional to its distance and inversely proportional to its time D. The speed of the object is constant and has nothing to do with the distance time reason
Select D
When an object moves in a straight line at a constant speed, that is, the speed remains constant and has nothing to do with the distance and time. It should be said that the distance of an object is directly proportional to the time
Letter expression of surface area formula of cube
A is the edge length of cube
S=6a^2
The letter formula for calculating the surface area of a cube is
Surface area: S = 6Aa
How to calculate the surface area and volume of cuboid and cube?
The surface area of cuboid = length × width × 2 + length × height × 2 + width × height × 2
Cuboid volume = length × width × height or bottom area × height
The surface area of cube is edge length × edge length × 6
The volume of cube = edge length × edge length × edge length or bottom area × height
How to calculate the surface area and volume of cube and cuboid?
The six faces of a cube are the same, so the length of the side multiplied by the length of the side multiplied by 6,
Volume is the third power of side length
Cuboid, (length by width + length by height + width by height) times 2
Volume is length by width by height
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