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kotetravels10
05.02.2020 •
Mathematics
The diameter of a circle is 9 cm. what is the area of the circle? use 3.14 for pi
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Ответ:
r = 9\2
so :
S= r² * Pi = (9\2)² * 3.14 = 63.58 cm²
Ответ:
Area = pi x r^2 where r = d/2
We calculate as follows:
Area = pi x r^2
Area = pi x (d/2)^2
Area = pi x (d^2 / 4)
Area = 3.14 x (9^2 / 4)
Area = 63.59 cm^2
Hope this answers the question. Have a nice day.
Ответ:
Step-by-step explanation:
angles in a triangle equals 180 degree.
we already know two angles, so
180-66-90(because it's a right angle)= 24 degrees