8. PROPERTIES OF A
SQUARE PYRAMIDS
1.Square pyramids is a pyramid with a square base
2.It also has four triangular sides five vertices and
eight edges
3.The top point of the pyramid is called an apex
4.If all triangular sides of the square pyramid are
equilateral
5.All the edges of the square pyramid will be equal
in length
9. LATERAL AREA OF SQUARE PYRAMIDS
Lateral area = 2al
a = base edge,
l = lateral height
10. PROBLEM
Find the lateral area of a square
pyramid whose base edge is 5cm and
lateral height is 7cm
Solution :
Lateral area = 2al
= 2 x 5 x 7
= 70 cm²
11. BASE AREA OF A
SQUARE PYRAMID
Base area = a²
a = base edge
12. PROBLEM
Find the base area of the square
pyramid whose base edge is 5cm
Solution :
Base area = a²
= 5²
= 25 cm²
13. TOTAL SURFACE AREA OF THE
SQUARE PYRAMID
Total surface area = 2al + a²
a = base edge , l = lateral height
14. PROBLEM
Find the total surface area of a
square pyramid whose base edge is
2cm and lateral height is 5cm
Solution :
Total surface area = 2al + a²
= 2 x 2 x 5 + 2²
= 24 cm²
