Answer:
k=-9
Step-by-step explanation:
k-8+8=-17+8
k=-9
Given:
A prism with height 5 cm and equilateral triangular base with side 2 cm.
To find:
The total surface area of the prism.
Solution:
Area of an equilateral triangle is:

Where, a is the side length.
Putting
, we get




The base and top of the prism are congruent so their area must be equal.
The lateral surface area of the prism is:

Where, P is the perimeter of the base and h is the height of the prism.
The lateral surface area of the prism is:



Now, the total surface area is the sum of areas of bases and lateral surface area.




Therefore, the total surface area is 33.46 cm².
Answer:
60.32cm
Step-by-step explanation:
I hope it's helpful
For question 38 it would be C. -38 because -38 - 7 is -45 and -45 divided by 9 is -5.
Question 35 would be B. 4/5 because 80% converted into a decimal is 4/5.
Hope these helped!! :)