To find the surface area of a triangular prism, we need to calculate the areas of each of the faces (2 triangles and 3 rectangles) and then sum them up.
The triangular faces:
Area of a triangle = 1/2 * base * height
First triangular face:
1/2 * 5cm * 3cm = 7.5 square centimeters
Second triangular face:
1/2 * 4cm * 3cm = 6 square centimeters
The rectangular faces:
Area of a rectangle = length * width
First rectangle:
5cm * 11cm = 55 square centimeters
Second rectangle:
4cm * 11cm = 44 square centimeters
Third rectangle:
3cm * 4cm = 12 square centimeters
Now, sum up the areas of all the faces:
7.5 + 6 + 55 + 44 + 12 = 124.5 square centimeters
Therefore, the surface area of the triangular prism is 124.5 square centimeters.
What is the surface area of the triangular prism 5cm, 3cm, 4cm, 11cm??????????
____, Square centimeters..
1 answer
1 answer