A rectangular pyramid. The rectangular base has a length of 3 meters and height of 2 meters. 2 triangular sides have a base of 3 meters and height of 9.9 meters. 2 triangular sides have a base of 2 meters and height of 10 meters.
What is the surface area of the pyramid?
24.9 m2
55.7 m2
75.7 m2
105.4 m2

55.7 m2

Step-by-step explanation:Step 1  

                                             3x2=6

                                             3x9.9=29.7

                                             10x2=20

                                              Step 2

                                               6+29.7+20=55.7

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.