Answer: OPTION A.
Step-by-step explanation:
First, in order to solve this exercise, it is important to know the definition of "Cross section".
A Cross-section is defined as the shape obtained when a plane intersects a 3-dimensional figure.
A Regular square pyramid has a square as its base and its faces are four congruent Isosceles triangles.
Therefore, if a plane slices a Square pyramid through the top vertex, theb figure obtained is an Isosceles triangle (which is a triangle that has two sides of equal length).
Then, you can conclude that the options that shows the best description of the cross-section obtained by slicing the given Square pyramid through the top vertex, is the Option A.
Answer:
They would need approximately 20 gallons of paint for the water tower, so yes, 25 gallons would be enough.
Step-by-step explanation:
In order to find out if there is enough paint for the surface area of the sphere, you need to first find the radius of the object so you can determine the measure of the entire surface area. Since they give us the volume, we can use that to solve for the radius using the volume formula: V = πr³ or 66840.28 = πr³. Using inverse operations, you can first multiply both sides of the equation by the reciprocal of 4/3 or 3/4, then divide by π, this gives you 15,965 = r³. In order to find 'r', take the cube root of both sides: ∛15965 = ∛r³ or r ≈ 25.
Now that you know radius = 25, you can use the formula for surface area: SA = 4πr² or 4π(25)² ≈ 7850 ft². Since one gallon of paint covers 400 square feet, we can take our total and divide by 400 to find the number of gallons: 7850 ÷ 400 ≈ 19.6. In total, we would need 19.6 gallons of paint for the water tower, so if there are 25 gallons available, there is enough.
Answer:
Aired
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
A is the only one that has points that get hit only once when performing the vertical line test. All others get hit more than once per line.