Answer:
45
Step-by-step explanation:
Answer:
Long sides are 1.4 and short sides are 0.7
Step-by-step explanation:
Answer:
A≈1206.37 cm²
Step-by-step explanation:
Radius = 12
Height = 16
Using the formulas
A= πrl+πr²
l = √r²+h²
A=πr(r + √h²+r²)=
π·12·(12+√16²+12²) ≈1206.37158cm²
Answer:
1) 
2) 
3) 
4) 
Step-by-step explanation:
1) Value of
since sin45° = 1/√2
Therefore 
2).Value of 
Since cos 30° = √3/2
Therefore 
3). Value of 
since tan 60° = √3
therefore 
4). Value of 
Since sin90°=1
Therefore 
The standard deviation of the set is 5.2
To find standard deviation, we take the square root of the variance.