Atriangular prism has a surface area of 134.94 km2. the base of the prism is an equilateral triangle with a height of 3 km and an unknown base. the distance between the bases of the prism is 12 km. find the measure of the base of the triangle. 4.8 3.9 2.5 3.46

3.46 km is the measure of the base of the triangle.

Step-by-step explanation:

Base of the prism is an equilateral triangle.

The length of the one of the side or base of the triangle = a

Height of the equilateral triangle,h = 3 km

Area of triangle = A

Height of the triangular prism = h' = 12 km

Area of rectangle =

Area of the triangular prism =

(In triangular prism there are two triangles bases and three rectangles)

a = 3.46 km

3.46 km is the measure of the base of the triangle.

answer: 59

step-by-step explanation:

19.side- angle- side

20. angle- side- angle

step-by-step explanation: