Answer:
18.84
Step-by-step explanation:
Diameter = 12
Circumference of a circle = πD
= 3.14* 12
=37.68
Since its a semicircle, (that's half of a circle), divide the result by 2
= 37.68/2
= 18.84
Set up a proportion.

=

Cross multiply.
2x=36
x=12
It would take her 12 minutes.
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Formula for
surface area of a cube: 6a² where
a=20.6 x (20)²
6 x 400
= 2400
Surface area: 2400 cm
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Mean absolute deviation: The average distance from each number in the set to the mean of the set.
Mean of the set:

9.6-3=6.6
9.6-8=1.6
10-9.6=0.4
12-9.6=11.4
15-9.6=5.4
Mean of 6.6, 1.6, 0.4, 11.4, and 5.4:
Answer:
first
Step-by-step explanation:
it's the first number so
2.83 if rounded. 2.82842712475 would be the actual.
Hope this helped!
Answer:
D)

Step-by-step explanation:
(See the picture)