Find the surface area of the regular pyramid shown in the accompanying diagram. If necessary, express your answer in simplest radical form.

84 squared units.

Step-by-step explanation:

In order to find the surface area of the pyramid, you use the following formula:

          (1)

b: base of the pyramid = 6

p: perimeter of the base = 6*4 = 24

s: slant height

Then, you first calculate the slant height, by using the Pythagoras' theorem:

Thus, you replace the values of b, p and s in the equation (1):

The surface area of the pyramid is 84 squared units.

after simplifying it i got: -36.25 as my answer. hope that !

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47