Answer:
B) 41.7
Step-by-step explanation:
Let
,
, and
. Use the Law of Cosines equation to find angle A=x which is directly across from side
:

Therefore, the correct answer is option B, which means you were right!
Answer:
Step-by-step explanation:
r=13in
Perimeter of a circle is 2πr
P=2×22/7×13
P=81.71in.
If it will make 3 revolution then it will have move 3 times it perimeter
3×81.71
245.14in
The distance the wheel will traveled is 245.14in
Put 12*5*8 into your calculator. The answer is 480 inches^3
For 30 60 90 triangles, the ratio of the side lengths is

where the first is the shorter leg, the second is the longer leg, and the third is the hypotenuse (the longest side that doesn't form a 90 degree angle)
so the ratio of the longer leg to the hypotenuse is <span>

or
</span>

<span>which equals </span>