raiderries
07.05.2020 •
Mathematics
Question 3
A rectangular prism has dimensions 3 inches, 4 inches, and 5 inches. Find the dimensions of another
rectangular prism with the same volume but less surface area.
What are the dimensions of the shape? *
What is its surface area?*
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Ответ:
Step-by-step explanation:
The formula for finding the volume is
Volume = length × width × height
Volume of the given prism is
Volume = 3 × 4 × 5 = 60 inches³
The formula for determining the surface area of a rectangular prism is expressed as
Surface area = Ph + 2B
Where
P represents perimeter of base
h represents height of prism
B represents base area
Perimeter of base = 2(length + width)
P = 2(3 + 4) = 14 inches
B = 3 × 4 = 12 inches
h = 5 inches
Surface area = 14 × 5 + 2 × 12 = 94 inches²
For another prism,
Assuming h = 3, length = 10 and width = 2, then
Volume = 3 × 10 × 2 = 60 inches³
P = 2(10 + 2) = 24 inches
B = 10 × 2 = 20 inches
Surface area = (24 × 3) + (2 × 20) = 112 inches²
If we keep changing the values, the surface area will always be greater than 94 inches².
Therefore, there is no rectangular prism with the same volume but less surface area.
Ответ:
The correct answer is the greater the mass, the greater the force. The hockey puck will move a greater distance in crash 1 than in crash 2.
Explanation:
The force with which a body moves depends on the acceleration it has and its mass. Since the bodies are solid, inelastic shocks are produced, in which all the energy is transmitted from one body to another. In case 1, the impacting body has a greater mass, producing a greater force on the hockey puck, causing it to travel a greater distance. In the second case, being massless, there will be a crash where the body that impacts will be still and the hockey puck will move less than in case 1.
Have a nice day!