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3 years ago

Please help me! I'm really stuck!

Mathematics

1 answer:

tatyana61 [14]3 years ago

6 0

Answer:

13.6

Step-by-step explanation:

This is pythagoras theorem its c2 = a2+b2

13 squared + 4 squared is 185

the square root of 185 13.601

then rounded is 13.6

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Can anyone please explain? Need some help :)

DedPeter [7]

Answer:

93.5 square units

Step-by-step explanation:

Diameter of the Circle = 12 Units

Therefore:

Radius of the Circle = 12/2 =6 Units

Since the hexagon is regular, it consists of 6 equilateral triangles of side length 6 units.

Area of the Hexagon = 6 X Area of one equilateral triangle

Area of an equilateral triangle of side length s = $\dfrac{\sqrt{3} }{4}s^2$

Side Length, s=6 Units

$\text{Therefore, the area of one equilateral triangle =}\dfrac{\sqrt{3} }{4}\times 6^2\\\\=9\sqrt{3} $ square units$

Area of the Hexagon

$= 6 X 9\sqrt{3} \\=93.5$ square units (to the nearest tenth)$

7 0

3 years ago

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lisov135 [29]

Answer:

First option: (Substitute)

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2 years ago

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What is the exact value of cos 45° ?

Georgia [21]

Let the two sides of a right triangle be equal to one, which means that the hypotenuse is √2

Since cosa=adjacent side / hypotenuse

cos45=1/√2

We can rationalize the denominator by multiplying numerator and denominator by √2

√(2)/2

or if you prefer: √(1/2)

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3 years ago

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Mila [183]

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Step-by-step explanation:

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2 years ago

Remainders and leftlover. Is the same?

horrorfan [7]

Yes. They both mean the same thing.

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3 years ago