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Lets find the area of the 2 rectangles on the left and right side.
8*7 (2) = 112 (Both rectangles in total)
Now lets find the rectangles on the front and back.
13*7 (2) = 182
Now, the top and bottom ones.
13*8 (2) = 208
Add them all together.
112+182+208 = 502
The surface area is 502.
Area of a triangle is base times height divided by 2. I multiplied 5 times 14 and got 70. The divided by 2 and got 35. soooo, 34?
Okay since this triangle is an isosceles triangle line AC and BC are congruent, meaning they’re equal length. Therefore, the equation to solve for X is...
20 = 3x - 7
27 = 3x
X = 9
Incase you want to find what line BC equals you just plug x into the equation so..
3(9) - 7 = 20
The answer is D............