Question

Regular triangular pyramid has 6 cm long base edge and slant height k=9 cm. Find the lateral area of the pyramid.

Answer 1

The lateral area consists of 3 triangles  of base 6 cm and height 9 cm

Lateral area = 3 * 1/2 * 6  * 9  =  81 cm^2  answer

Answer 2

Answer

81 cm^2

Step-by-step explanation:

lateral area : 3 triangles of base 6 cm and height 9 cm

Lateral area = 3 times 1/2 times 6 times 9

=  81 cm^2