Answer:
the whole triangle is 180°
Step-by-step explanation:
63 + 68 = x
180° - x = y
y = the answer
If each face is 80m² and there are 4 identical faces, the answer would be 4 x 80 = 320m² - C
Answer:
34 years
Step-by-step explanation:
To begin even finding this ages you would have to find the 2 numbers in which (when multiplied) equal 2015. The numbers I have found that are most reasonable include:
65 and 31.
65 x 31 = 2015
So the difference:
65 - 31 = 34
Answer:
6.83 units
Step-by-step explanation:
Let the height of the original pyramid be represented by h. Then the cut off top has a height of (h -2). The scale factor for the area is the square of the scale factor for height, so we have ...
(height ratio)^2 = 1/2
((h -2)/h)^2 = 1/2
(h -2)√2 = h . . . . . . square root; multiply by h√2
h(√2 -1) = 2√2 . . . . add 2√2 -h
h = (2√2)/(√2 -1) ≈ 6.8284 . . . units
The altitude of the original pyramid is about 6.83 units.
