Solve for x given the surface area, S, of the prisms or cylinders below. The triangles ARE EQUILATERAL TRIANGLES. Round your answer to the hundredths place, if needed. Please help me, people. I need this now!

x = 6 cm

Step-by-step explanation:

The equilateral triangular prism below has 2 triangle and 3 rectangle .To calculate the surface area we have to sum the area of each simple shape.

The triangle is an equilateral triangle , that means the sides are all equal.

Area of triangle = 1/2 bh

where

b = base = x cm

h = height = 6 cm

area = 1/2 × x × 6

area = 6x/2

area = 3x

For two triangle = 3x + 3x = 6x

Area of the rectangle  = Lb

where

L = 12 cm

b = x cm

area = 12x

For 3 rectangles = 12x + 12x + 12x = 36x

Therefore,

6x + 36x = 252

42x = 252

divide both sides by 42

x = 252/42

x = 6 cm

37.5%

Step-by-step explanation:

From the given table, the total number of police vehicles=

The number of vehicles with speed between 46 and 50 miles per hour=18

Therefore, the percent of vehicles were traveling between 46 and 50 miles per hour

hence, the percent of vehicles were traveling between 46 and 50 miles per hour= 37.5 %