Answer:
350.82
Step-by-step explanation:
To find the surface area, you must add up all of the areas of each shape of the prism in order to get the sum surface area.
The rectangle's area (
):

The triangle's area (
):


Now add up all the sides. (3 Rectangles, 2 Triangles.)


The total surface area is 350.82 cm squared.
Answer:-74
Step-by-step explanation: When you are in the megatives, less is more! So -74 is actually greater then -75
If you follow PEMDAS your answer would be 3.6.
The answer is 21 because 189 divided by 9 is 21