A triangular prism is 16 millimeters long and has a triangular face with a base of 18 millimeters and a height of 12 millimeters. The other two sides of the triangle are each 15 millimeters. What is the surface area of the triangular prism?

surface area of the triangular prism = 984 mm²

Step-by-step explanation:

first of all, we know that area of triangle is given as;

1/2 x base x height.

Thus;

Each triangular face of the prism will have an area of ;

1/2 x 18 x 12 = 108mm²

Therefore, the two triangles will have a combined area of 108 x 2 = 216 mm².

Now, the perimeter of both identical isosceles triangles will be;

15 + 15 + 18 = 48mm

And since the length of these sides is 16mm,thus the area here will be 48 x 16 = 768 mm²

Thus total surface area of the prism = 216 + 768 = 984 mm²

parallel and congruent

step-by-step explanation:

the movement of translation is linear.   these have the same translation because you are using the same rule for each point of the triangle so you will see the same slope being used to get from a point on the triangle to its image.

same slope!   you should think parallel when you see those 2 word together (well unless it's the same line but it can't be because we are coming from different points here)

congruent! because each point is being moved the same distance.

huh? im pretty sure it is in 199

step-by-step explanation: