Step-by-step explanation:
we know ,
area of circle =πr^2
hence we get from the figure that the diameter of circle is 19 cm and we can find radius
r=d/2
r=18/2=9cm
area of semicircle =πr^2/2
area of Semi circle equals to =22*(9)^2/7/2
=127.2857143
Answer:
first one
Step-by-step explanation:
Answer:
-8,-4,6
Step-by-step explanation:
Just answered it
30% converted to a decimal is 0.30
310 x 0.3 = 93 students play an instrument
D*pi so 6cm * pi which is ~18.849cm
