Answer:
A;3600 yd2
Step-by-step explanation:
The surface area is found by adding the area of the sides
The area of the bottom is
A= s^2 where s is the side length since it is a square
A = s^2 = 30^2= 900
We can find the area of one of the sides and multiply by 4 since all the sides are the same
The sides are triangles so
A = 1/2 bh where b is the base b=30 and h is the height = 45
A = 1/2 (30)* 45
A = 675
We have 4 of these triangles
4*675 =2700
Add the 4 triangles and the bottom
2700+900
3600
Answer:
A) 5
Step-by-step explanation:
(7 + 1)( 7+ 2) 7 + 1
Answer:

Step-by-step explanation:
The base of the pyramid we need to study is a hexagon.
Let's look at the attached image of an hexagon to understand how we are going to find the area of this figure.
Notice that an hexagon is the combination of 6 exactly equal equilateral triangles in our case of size "2x" (notice that the "radius" of the hexagon is given as "2x")
Therefore the area of the hexagon is going to be 6 times the area of one of those equilateral triangles.
We know the area of a triangle is the product of its base times its height, divided by 2: 
We notice that the triangle's height is exactly what is called the "apothem" of the hexagon (depicted in green in our figure) which measures
, so replacing this value in the formula above for the area of one of the triangles:

Then we multiply this area times 6 to get the total area of the hexagon (6 of these triangles):
Area of hexagon = 
which is the last option given in the list.