If X = 4 units, Y = 3 units, and Z = 6 units, then what is the surface area of the right triangular pyramid shown above?

A. 48 square units

B. 36 square units

C. 42 square units

D. 22.5 square units

C. 42

Step-by-step explanation:

Since the triangle making up the base of the right triangular pyramid is equilateral, the three lateral triangles will have equal areas. To find the surface area of the pyramid, find the area of one of the lateral triangles and multiply it by 3. Then, add that to the area of the triangle that forms the base.

Area of Lateral Triangle = 1/2 · base · height

                                       = 1/2 · X · Z

                                      = 1/2 ·  4 units ·  6 units

                                      = 12 square units

Area of Base Triangle = 1/2 ·  base ·  height

                                    = 1/2 ·  X ·  Y

                                    = 1/2 ·  4 units ·  3 units

                                   = 6 square units

Now, use the method described above to find the surface area of the pyramid.

Surface Area = 3( Area lateral ) + ( Area base )

                     = 3 ( 12 square units ) + ( 6 square units )

                    = 42 square units

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.

c) the median for town a 30" is greater than the median for town b 25"

step-by-step explanation:

town a, median = q2 = 30

town b, median - q2 = 25

so the median for town a 30" is greater than the median for town b 25"