The formula for the area of a triangle is A = 1/2 x b x height. But, we don't have the height here. To find the height, we can use the Pythagorean theorem.
With Pythagorean theorem, we'll be finding one of the legs. If we split the original triangle in 1/2 from the vertex to the base, we now have two right triangles. Both of these right triangles have a 30 cm hypotenuse and one 13 cm leg (remember we divided the entire original triangle in half).
30^2 = 13^2 + b^2
169 + b^2 = 900
b^2 = 731
b = 
Now that we know the height of the triangle, we can find the area.
A = 1/2 x 26 x
A = 13 x
A = 351.48
The final area, rounded to the nearest whole number is 351 centimeters squared.
Note: Please know that depending on if the answer rounded before using it to find the area, the final answer may then be rounded to 352.
Hope this helps! :)
Answer:
B. a warm coat, because the winters will be cold
Step-by-step explanation:
Continental climates are notable for extreme weather conditions. When it is hot, it is extremely hot and when it is cold, it is extremely cold. Tropical climates on the other hand are known to always have hot weather conditions.
Since Harry is already used to the tropical climate which largely features hot temperatures, we assume that he already has suitable clothing for such weather conditions. So, in addition to that, Harry would need warm clothing for the cold winters which he would experience in the continental climate. So, Harry would need a warm coat because the winter will be cold.
The statement above is represented in the figure below. We have plotted the focus, the directrix and the parabola. So we know that the parabola opens downward. We also know that:
Because this is true the equation of the parabola is:
So our goal is to find the value of
. Given that the parabola opens downward, then
and from the figure:
Accordingly:
Finally,
the right answer is <span>
f(x) = − one sixteenth x2</span>
143.50 plus 143.50 * .08 =
<span>
<span>
<span>
11.48
</span>
154.98 Total
</span>
</span>
