Answer:
The total surface area of triangular pyramid is 172 cm squared
Step-by-step explanation:
Triangular pyramid:
- Number of faces 4.
- Number of vertices of a triangular pyramid is 6.
- The volume is
. A= area of the pyramid's base and H= height of the pyramid.
- The surface area of triangular pyramid B+L. B= area of base, L= area of lateral surface.
Given that, the area of the base is 43 cm squared. Lateral faces with bases of 10 cm and heights 8.6 cm.
The 3 sides of the triangular pyramid is triangle in shape.
The area of triangle is
.
The lateral surface area of the triangular pyramid is

cm squared
=129 cm squared
The total surface area of triangular pyramid is
=Area of the base + lateral surface area
=(43+129) cm squared
=172 cm squared
I think this is the function
Hello!
First you find what numbers give you the same perimeter
9 + 9 + 6 + 6 = 30
5 + 5 + 8 + 8 = 26
7 + 7 + 4 + 4 = 22
6 + 6 + 8 + 8 = 28
The choice that has the same perimeter is D
The answer is D) 6 centimeters by 8 centimeters
Hope this helps!