Answer:
380
Step-by-step explanation:
The surface of a square pyramid is made up of a single square in the center, and four triangles on the sides. The square's area is 10*10=100, while the area of each of the triangles is 10*14/2=70. Multiplying this by the 4 triangles, you get 280. Adding them together, you get a total of 380 square meters. Hope this helps!
11=undercagon
4= quadrilateral
10=decagon
12=dodecagon
5= Pentagon
Answer:
d
Step-by-step explanation:
add all the angles you know to get 480
the number of angles - 2 x 180 to get 720
720-480=240
divide 240 by 3 to get x
Answer:
52 thousandths is 5.2 x 10^-2 (0.052)
