Here some explanation of pyramid. :D

1. 3

2. 2

3. 1

6. Group:
Aqmalia Shafira
Sabila Anjani
Anindhito
Julio Caesar
Febiola Efriani

7.  Is geometrical polygon-shaped base
and the establishment of a triangular
field that intersect at one point.
Intersection of the straight sides of the
pyramid called cusp pyramid.

8. 1 2 3 4
1. Triangular Pyramid
2. Rectangular Pyramid
3. Pentagonal Pyramid
4. Hexagonal Pyramid

9.  Triangular Pyramid has 6 lines
 Rectangular Pyramid has 8 lines
 Pentagonal Pyramid has 10 lines
 Hexagonal Pyramid has 12 lines
FORMULA

10. Lines = 2n
Where n is the type of the pyramid
base. If the type of base on the
pyramid is square, then n = 4. If the
type of base on the pyramid is a
triangle, then n = 3, and so on.

11. Sides of Triangular Pyramid
•Triangular Pyramid has 4 side
•The field of side: Triangle(4)
Sides of Rectangular Pyramid
Rectangular Pyramid has 5 side
The field of side: Triangle (4) Rectangle (1)

12. In the Triangular Pyramid, there are 9
corners and there are 4 vertex.
In the Rectangular Pyramid, there are 12
corners and there are 5 vertex.
FORMULA

13. points = n + 1
Where n is the type of the pyramid
base. If the type of base on the
pyramid is square, then n = 4. If the
type of base on the pyramid is a
triangle, then n = 3, and so on.

15.  Surface area pyramid =
= Area□ ABCD + Area ∆ TAB + Area ∆ TBC
+ Area ∆ TCD + Area ∆ TAD
Luas Permukaan pada Limas =
Luas alas + jumlah seluruh luas sisi tegak

16.  Base pyramid form a right triangle with
sides of length 12 cm, 16 cm, 20 cm. If
the pyramid height 21 cm, then the
volume of the pyramid is....

17. ANSWER
Lalas = ½xaxt
= ½ x 16 x 12
= 96 cm²
Vlimas = 1/ x Lalas x tLimas
3
= 1/ x 96 x 21
3
= 672 cm³

18.  Picture below is a rectangular pyramid.
ABCD with base side length of 6 cm and
4 cm tall pyramid. Then the surface area
of ​the pyramid is ...

19. 1. OF = ½ x AB = ½ x 6 = 3 cm
TF² = TO² + OF²
= 4² + 3² = 16 + 9 = 25
TF = √25 = 5 cm
Lp = Lalas + Lsisi tegak
= AB x BC + 4 x ½ x BC x TF
=6x6+4x½x6x5
= 96 cm²
ANSWER