Answer:58.56
tienes que aplicar el teorema de Pitágoras para resolverlo como tienes el valor de A y C primero encuentras B y luego ya es mas fácil encontrar x
Te dejo un archivo adjunto con el procedimiento

Let's write the equation of line in slope point form ~




Now, let's use this equation of line to plot two points ~
- when x = 0, y = (3 × 0) - 1 = - 1
- when x = -1, y = (3 × -1) -1 = -4
Now, plot these points on graph ~
The apothem is the distance from which the altitudes of the triangle to one of its sides. It can be calculated through the equation below,
tan 30° = apothem / 0.5(length of side)
Substituting the known values,
tan 30° = 5 / 0.5x
The value of x from the equation above is 17.32. Multiplying this value by 3 (because a triangle has 3 sides), we get an answer of 51.96 cm or approximately equal to 52. Thus, the answer is letter B.
Answer:
I believe the answer is 20
The is c for this question