6 divided by 2 equals 3. Multiplying with 6 is like multiplying like 3 because multiplying by 6 is equal to multiplying by 3 then multiplying that answer by 2, and getting the same answer as you would when you multiply by 6.
Problem 1
Answers:
- Choice A) Cylinder
- Choice C) Rectangular prism
- Choice D) Rectangular pyramid
Reason:
Refer the diagram below to see how rectangular cross sections are possible. The cross sections are marked in red.
For the rectangular prism, we could have a vertical or horizontal plane. For the cylinder, only a vertical cross section is possible. On the flip side, a rectangular pyramid can only have horizontal rectangular cross sections (which are similar to the base).
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Problem 2
Answer: Approximately 73,280.62908 square feet
Explanation:
Calculate the area of the trapezoid. Ignore the small triangle for now.
A = h*(b1+b2)/2
A = 354*(266+158)/2
A = 75,048
Now calculate the area of the triangle we ignored earlier
Before we do this, we'll need to use the pythagorean theorem to find the missing horizontal piece
a^2 + b^2 = c^2
b = sqrt(c^2 - a^2)
b = sqrt(97^2 - 40^2)
b = 88.368546 which is approximate.
Now we can find the area of the small triangle
Area = base*height/2 = 88.368546*40/2 = 1,767.37092
This is to be subtracted from the area of the trapezoid we found earlier.
75,048 - 1,767.37092 = 73,280.62908
Round the result however you need to.
Answer:
59cm
Step-by-step explanation:
Answer:
657483920
Step-by-step explanation:
this is incorrect
Step-by-step explanation:
u get this diagram^
to find DBC
B+40+90=180
B=50°
to find BCD
CDB is 90° ( since perpendicular to AB)
so taking triangle BCD
90+50+c=180
c=40°