2 answers:
Answer:
A
Step-by-step explanation:
You should know the area of a circle, A = πr².
So, all you need to find is the area of half a circle, or A = 
πr²
We see that the radius is half of the diameter or r = 6 in.
A = (3.14)(6)²
A = 56.52 in²
The awnser for this should be a
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Seven hundred and and eighty thousand
Answer:
21+3x
Step-by-step explanation:
Formula
V = (1/3) pi * r^2 h
pi = 3.14
d = 3 cm. (very small)
r = d/2 = 3/2 = 1.5 cm
h = 7 cm
V= (1/3) 3.14 * 1.5^2 * 7
V = 1.04 * 1.5^2 * 7
V = 16.485 cm^3
L <<<<==== answer.
<span>It could be C. If the blade spends twice in a minute, it would be 30 seconds. 30=2pi/B=pi/15. </span>
The answer would be 5 like they said
