Answer:
408 sq. in.
Step-by-step explanation:
The total surface area of the pyramid is the sum of all 4 faces (each of them a triangle) and square base.
Triangle area is where b is base and h is height.
base of triangle is 12 and height is 11
So area of each triangle is
There are 4 of them, so total is 66 * 4 = 264
Now, square has an area of where s is the side length.
It is given s = 12, so the area of the square base is:
Total Surface Area of the Pyramid is 264 + 144 = 408 sq. in.
Since both of the numbers have a variable which is x ready to be multiplied, there is no expression leading to the variable therefore you will add normally but you will need to put the missing variable which needs to be multiplied. So overall you can just add and once you get your variable you can be abe to multiply and get your final answer.
Hope this helps
Answer:
2592
Step-by-step explanation:
1.5 of 12 is 6.
so you do 6X216
Answer:
Step-by-step explanation:
since the triangle is a 30-60-90 triangle:
√3 : 2 = x : 9
=> 2x = 9 √3
=> x =
3x(sqrt 4x+5)/4x+5
You have to multiply the numerator and denominator by sqrt 4x+5 in order to rationalize