<h3>Answer:</h3>
Mean: 17.2
Median: 18
Mode: 18
<h3>Solution:</h3>
Mean: The sum of all observation divided by several observation
- 20+18+13+17+18=86
- 86÷5=
- 17.2
Median:it is the middlemost observation of data arraged in increasing or decreasing order of values
- (13,17,18,18,20)
- (17,18,18)
- (18)
Mode:it is the value that occurs frequently in a set of data
Hope it helps
Answer:
505 ft
Step-by-step explanation:
pythagorean therom = 
a= 15
b=9

144+361=505
505 ft
To find the volume,we would first need to find the height of square pyramid, by it's base edge and slant height using Pythagoras theorem:

We can then use the pyramid formula to find the volume:

In this case,the volume will be:
10×_/69×1/3
=27.68874...
≈27.7 units^3
Hope it helps!