riri914267
New member
- Joined
- Apr 21, 2021
- Messages
- 3
Hello, please help me find the surface area of this and correct my work.
View attachment 26671
So, here is my workView attachment 26672
Can somebody please tell me what I did wrong?
We don't know what the letters stand for in your formula - but the initial formula seems to be incorrect.
All the calculations are grand up until the part where you find the area of the two triangles.
The height of the triangles is [MATH]4\sqrt{3}[/MATH], and the base is 8. The area of a triangle is [MATH]\frac{1}{2}[/MATH]base×height
Since there are two of them you might as well calculate them together and do base×height = [MATH]8 \times 4\sqrt{3}[/MATH]The mistake you made was to do [MATH]24 \times 4\sqrt{3}[/MATH]
I understand what you are doing now.I used the formula for surface area of a right prism, is that right?
You can also use the triangle area? Please explain it to me in the surface area of a right prism formula