Answer:
x = 18√3
Step-by-step explanation:
From the picture attached,
In a right triangle,
Measure of one angle = 30°
Measure of adjacent side of the angle = 9 units
We have to find the measure of Hypotenuse from the given properties.
By cosine rule,
cos(30°) = 
Therefore, measure of Hypotenuse is 18√3 units.
6a(2)-a-15
=12a+-a+-15
Combine Like Terms:<span>=<span><span><span>12a</span>+<span>−a</span></span>+<span>−15</span></span></span><span>=<span><span>(<span><span>12a</span>+<span>−a</span></span>)</span>+<span>(<span>−15</span>)</span></span></span><span>=<span><span>11a</span>+<span>−15</span></span></span>Answer:<span>=<span><span>11a</span>−15</span></span>
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We know that
[lateral surface area of a regular triangular pyramid]=3*[area of one <span>equilateral triangle]
so
[area of one </span>equilateral triangle]=lateral surface/3-----> 81/3-----> 27 ft²
[<span>surface area of the regular triangular pyramid]=lateral area+area of the base
area of the base is equals to the area of the lateral sides because are </span>equilateral triangles
therefore
area of the base=27 ft²
[surface area of the regular triangular pyramid]=81+27----> 108 ft²
the answer is
<span>the surface area of the regular triangular pyramid is 108 ft</span>²
Answer: finding volume is length times width times height and area is length times with so the ways they are the same are the fact that you do length times width for both and they fact that they are both solved through multiplication.
Step-by-step explanation: hope this helped :)
