Answer: 400 cm^2
Explanation:
The surface area can be calculated by measuring the areas of each side and adding them together.
The area of the triangle closest to the viewer can be calculated with the formula (l*w)(1/2). In this case, it is (15*8)(1/2). 15*8 equals 120, which is then multiplied by (1/2), which will give an answer of 60. The same equation can be given for the farthest triangle.
We will then calculate the area for the left side. The formula to calculate a rectangle is simply l*w. In this case, it would be 15*7, which equals 105.
Next, we will calculate the base using the same formula. In this case, it would be 8*7, which equals 56.
Then, we will calculate the final side, using the same formula. In this case, it would be 7*17, which equals 119.
Finally, we will add each of the areas to get the surface area. in this case, it would be 60+60+105+56+119, which equals 400.
Always remember to add the unit after the sum. In this case, it would be cm^2. This makes the answer 400cm^2