Answer:
I'll say 43 degrees, if you were to take out the D line, then it would've been a 180 degree, which you subtract 137 degrees from to get 43 degrees.
A pyramid is regular if its base is a regular polygon, that is a polygon with equal sides and angle measures.
(and the lateral edges of the pyramid are also equal to each other)
Thus a regular rectangular pyramid is a regular pyramid with a square base, of side length say
x.
The lateral faces are equilateral triangles of side length
x.
The lateral surface area is 72 cm^2, thus the area of one face is 72/4=36/2=18 cm^2.
now we need to find
x. Consider the picture attached, showing one lateral face of the pyramid.
by the Pythagorean theorem:
thus,
thus:
(cm^2)
but
is exactly the base area, since the base is a square of sidelength =
x cm.
So, the total surface area = base area + lateral area =
cm^2
Answer:
cm^2
Answer:22.5
Step-by-step explanation:think of 500.000 as an 500 then multiply 0.045 so I got 22.5
Answer:
a
Step-by-step explanation:
#d times 2 = 69, take 69 and multiply by B and then you get 69, or x=o
Answer:
2
Step-by-step explanation:
This is a polynomial of degree 2 and has 2 solutions.