45, 40, 36, 38, 42, 48, 40, 40, 70, 45, 42, 43, 48, 36 Can some one help me find
1 answer:
Answer:
Mean:43.8
Median: 42
Step-by-step explanation:
Mean:
To get the mean we must add all of the terms, and then divide by the number of terms. There are 14 numbers so I will divide the sum by 14.
Add:
45+ 40+36+38+ 42+ 48+ 40+ 40+ 70+ 45+ 42+ 43+ 48+ 36 = 613
Divide:
613/14 = 43.78
Median:
To get the median we must arrange them in order like :
36,36,38,40,40,40,42,42,43,45,45,48,48,70
And then find which number is in the middle. I will do so by crossing out numbers from the front and back.
36,38,40,40,40,42,42,43,45,45,48,48
38,40,40,40,42,42,43,45,45,48
40,40,40,42,42,43,45,45
40,40,42,42,43,45
40,42,42,43
42,42
We are left with 42 and 42, and the average of 42 and 42 is 42. The the answer is 42.
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Answer:
314 ft²
Step-by-step explanation:
Data provided in the question:
Depth (height) of the pool = of its radius
let the radius be 'r' ft
thus,
Depth (height) of the pool, h = ft
Volume of the pool = 1570 ft³
also,
Volume of cylinder = πr²h
thus,
1570 ft³ = πr²h
or
1570 ft³ =
or
3140 = 3.14 × r³ [ π = 3.14 ]
or
r³ = 1000 ft³
or
r = 10 ft
Thus,
Area of the bottom surface = πr²
= 3.14 × 10²
= 314 ft²