The area of each triangular face is
.. A = (1/2)*b*h
.. Aside = (1/2)*(6 cm)*(5 cm) = 15 cm^2
The area of the triangular base is
.. Abase = ((√3)/4)*s^2 = (√3)/4*(6 cm)^2 = 9√3 cm^2
The total surface area is the base area plus the area of the three sides.
.. Atotal = Abase + 3*Aside
.. = 9√3 cm^2 +3*15 cm^2
.. = (45 +9√3) cm^2
.. ≈ 60.6 cm^2
Actually, there's an error in the picture. The height of the side should be 4, and the length of the edge should be 5. Making that adjustment, the total area is 51.6 cm^2.
It is hard to tell what is intended. Not all answers are showing, so we can't "reverse-engineer" the problem from the answers.
Answer:
77 degrees
Step-by-step explanation:
You have to study
Answer:
32w^3 + 16x^2 - 8
Step-by-step explanation:
Perimeter = 2L + 2W
L = 9W^3 + 8W^2, W = 7w^3-4
2(9w^3 + 8w^2) + 2(7w^3 - 4)
= 18w^3 + 16w^2 + 14w^3 - 8
Combine like terms
32w^3 + 16w^2 - 8