I need help on this one please

The surface area of the triangular prism is .

Step-by-step explanation:

The surface area of any prism is the total area of all its sides and faces. A triangular prism has three rectangular sides and two triangular faces.

An equilateral triangle is a triangle with all three sides of equal length.

To find the surface area, the area of each face is calculated and then add these areas together.

The formula is used to find the area of the triangular faces, where A = area, b = base, and h = height.

The formula is used to find the area of the three rectangular side faces, where A = area, l = length, and w = width.

The surface area of the triangular faces is:

The surface area of the three rectangular side faces is:

The surface area of the triangular prism is .

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

78.59 is the mean

step-by-step explanation: