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storchak [24]
3 years ago
7

What is the square root of -1?

Mathematics
1 answer:
RSB [31]3 years ago
6 0
Square root of -1 is an imaginary number labeled as i


The term "imaginary" is used because there is no real number having a negative square. There are two complex square roots of −1, namely i and −i, just as there are two complex square roots of every real number other than zero, which has one double square root.
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Please help me out with this
olga_2 [115]

Answer:

10.4 cm

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The volume (V) of a pyramid is calculated using

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area of square base = 6² = 36, thus

\frac{1}{3} × 36h = 120

12h = 120 ( divide both sides by 12 )

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To find the slant height (s) consider the right triangle from the vertex to the midpoint of the base and from the midpoint of base to the side.

That is a right triangle with hypotenuse s and legs 10(h) and 3 (midpoint of the base )

Using Pythagoras' identity then

s² = 10² + 3² = 100 + 9 = 109

Take the square root of both sides

s = \sqrt{109} ≈ 10.4 cm

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