4/3
Remember if two lines are perpendicular, the product of their slopes are -1
the formula for slope is

so just replace y and x for the proper values
Answer:
Step-by-step explanation:
Alright, lets get started.
The surface area of the figure given is : The area of all shapes together
The figure has 2 similar triangles and 3 similar rectangles.
The area of 1 triangle =

The area of 1 triangle = 
So, the area of both triangles = 
The area of 1 rectangle = 
The of 1 rectangle = 
So, the area of all 3 rectangles = 
So, total area of figure = 
hence the surface area is 536.6 square centimeters : Answer
Hope it will help :)
Answer:
b.d-6 that's the correct answer
7% of 500 is 35
35 * 3 = 105
500 + 105 = 605therefore ur answer is c $605