Answer:
1. 51°
2. 40°
3. 65°
4. 60°
Step-by-step explanation:
The sum of the angles in a triangle is 180°. We can use the angles given to find the missing angle.
1. 51°
42+87+x=180
129+x=180
x=51
-------------------------------------------------------------------------------
2. 40°
110+30+x=180
140+x=180
x=40
-------------------------------------------------------------------------------
3. 65°
20+95+x=180
115+x=180
x=65
-------------------------------------------------------------------------------
4. 60°
60+60+x=180
120+x=180
x=60
Check the picture below.
so the pentagonal prism in the picture is been seen from the bottom, namely so we can see its base, however the base is at the bottom, what does that mean, it means that the pentagonal bases are the top and bottom of the prism, that matters, because the other sides are the lateral sides.
so, if we notice, the lateral sides are really just 5 rectangles, each one a 12x4, so if we simply get the area of all those rectangles.
5(12 * 4) = 240 in².
Try to use Socratic or Photomath
The answer is: 64
Hope it helps! And have a great day✌
Answer:
5
6
2
+
1
9
−
1
0
Step-by-step explanation: