Answer:
I think in grade 6th or 7th I star it learning those types of equations
Answer:
+6
Step-by-step explanation:
Answer:
The surface area is 339.5 
Step-by-step explanation:
The surface area of a 3-dimensional shape is calculated by adding the areas of each side together, which would be 24.5 + 52.5 + 52.5 + 105 + 105 = 339.5 inches squared.
Answer:
or 
Step-by-step explanation:
You can find the area of a regular hexagon with the following formula:

Where "s" is any side of the regular hexagon.
For this hexagon you know that the length of each side is 4 inches. Then, you must substitute
into the formula
.
Therefore, the area of this regular hexagon is:

or 
Since yz is the tangent
angle zyx=90
by pyth. theorem
15 ²=4 ²+ZY ²
ZY=c