Answer:
B
Step-by-step explanation:
The area of the rectangle would be 30 while the area or the triangle is 6
Rectangle
b x h = A
5 x 6 = 30
A = 30
Triangle
1/2 x b x h = A
1/2 x 3 x 4 = A
1/2 x 12 = 6
A = 6
cos(-240°) = cos 120°; the "adjacent sides" and the "hypotenuses" are the same in both cases. The supplement of 120° is 60°, and 60° is a positive acute angle. Since cos(-240°) is negative, we need to write
cos(-240°) = -cos(60°).
Check: cos(60°)= 1/2, so - cos(60°) = -1/2, which is the value of cos(-240°).
We know, Circumference of a Circle = 2πr
Here, r = 500/2 = 250
So, C = 2 * 3.14 * 250
C = 1570 Km
In short, Your Answer would be Option B
Hope this helps!