Answer:
A= 254.34 m²
Step-by-step explanation:
to find area of a circle use this formula, A=
r²
now just plug it in
A=
9²
A=
81
A= 254.34 m²
Answer:

Step-by-step explanation:
Remember that the equation of the line is

in this case we have

that is because

Answer:
C
Step-by-step explanation:
Finding the z-score:
z = (x - μ) / σ
z = (66 - 57) / 9
z = 1
Using a z-score table or calculator:
P(z < 1) = 0.8413
84.13% of 4000 is:
0.8413 (4000) = 3365.2
Rounding up to the nearest whole number, approximately 3366 students will score less than 66. Answer C.
Answer:
who is this
Step-by-step explanation:
who deleated this and why
Answer:
A = bh thus: A=671.34 mm²
Step-by-step explanation:
Area =b* (base) h (Height)