Answer:
Mean = 272.3
sd = 37.7
Step-by-step explanation:
Mean = sum/n
(221+248+251+255+259+263+264+272+291+297+374) ÷ 11
= 2995/11
= 272.2727273
Variance = (sum of x²)/n - mean²
[(221²+248²+251²+255²+259²+263²+264²+272²+291²+297²+374²)/11] - (2740/11)²
= (831067/11) - (2995/11)²
= 1419.107438
sd² = variance
sd = sqrt(1419.107438)
sd = 37.67104243
Answer:
1) 113.1
Step-by-step explanation:
6 x 6 = 36 x <em>Pi(3.14)</em>
Answer:
2) 49.135
Step-by-step explanation:
The area of the triangle is 24. The area of the "half circle" is 25.1.
Add them together, and get 49.135.
Hope this Helps!
<em>-kiniwih426</em>
Step-by-step explanation:
here is the answer mark me as on Brainlist
Change 20% to a decimal
20% = 0.2
now multiply 20 by 0.2
20x0.2 = 4