Answer:
Option C 
Step-by-step explanation:
we know that
the surface area of a pyramid is equal to

where
B is the area of the base
LA is the lateral area
The area of the base B is

The lateral area is equal to

the surface area is equal to

Using Pythagoras:-
x^2 = 6^2 + (sqrt18)^2
= 36 + 18 = 54
x = sqrt54 = 3 sqrt6
Speed and velocity is the answer
The correct answer is A, x-4
Answer:
D
Step-by-step explanation:
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