The surface area of the pyramid is 576.
<em>The square base is 144. It's just a square, so you multiply 12 (length) and 12 ( width) , which equals 144. </em>
<em>Then you find the area of one of the triangles. The equation to find triangles goes like this: 0.5 x B (base: 12) x H (height: 18). That would be 6 x 18 which is 108.</em>
<em>Since you got the area of 1 triangle and there are 4 triangles you have to multiply 108 by 4. That'll give you 432.</em>
<em>SO since you have the area of all the triangles and the square base the last thing you have to do is just add it all up. </em>
<em>The area of the triangles plus the area of the square base = the surface area.</em>
<u>432 cm + 144 cm =576 cm.</u>
-5, -10 is the correct answer
Answer:
1. a b d e
2. b c d e
3. a d e
Step-by-step explanation:
Right angles: angles that are 90 degrees
Acute angles: angles that are between 90 to 0 degrees
Obtuse angles: angles that are greater than 90 degrees
Answer:
D
Step-by-step explanation:
Answer:
a) pattern a: 4,8,12,16,20
pattern b: -8,-16,-24,-32,-40
