Answer:
B. 3.27 x 10^11.
Step-by-step explanation:
There are 11 digits after the first one, so it is
3.27 x 10^11.
Answer:
breakdown the initial figure into 2 rectangle
and add their area
Cot (- 210º) = - √3 so <span>30° </span>
Let's group the cubic function:

.
The first two roots are

however to find the last two roots we need to solve the square equation:

. Now we know the discriminator, using the discriminator we're able to find the roots of the equation:

. The roots of the square equation are

and

.
The roots of the cubic function are

,

and

.