Answer:
angle x= 60
so it is in the ratio 1:2:√3
√3x=3
ie.x=√3/3
adjacent side=x=√3/4
Answer:
B is the awnser
Step-by-step explanation:
Answer:
Area of the square pyramid = 
Step-by-step explanation:
The Surface area of the square pyramid :
Area of the four triangular faces+ Area of the square base

For triangle:

Side of the square base= 
Area of the figure is:

The area of the square pyramid is : 
Answer: 8,100 cm^2
Step-by-step explanation: Area = S^2 so each side is sqrt(900) = 30cm
A square 3 times bigger has sides 30cm*3 = 90cm. The area for that square is 90^2 = 8,100 cm^2