Answer:
Volume=469cm³
Step-by-step explanation:
[tex]
Volume,V=Volume Cone + Volume\ of Hemisphere\\\\
Volume Cone,V1=\pi*r^2*\frac{h}{3}=\pi*4^2*\frac{12}{3}\\ \\
=201.06cm^3\\
Volume of Hemisphere,V2=2*\pi*\frac{r^3}{3}\\
=2*\pi*\frac{4^3}{3}=268.083cm^3\\
Volume=V1+V2=201.06+268.08\\
=469cm^3
[\tex]
Given:
The ratio of boys to girls is 
.
Number of boys = 24
To find:
The number of girls.
Solution:
We have,
Boys: Girls = 4:5
Let the number of boys be 4x and number of girls be 5x.
Now,
Number of girls = 
= 
= 
Therefore, the number of girls is 30.
Answer:
AC and DF
Step-by-step explanation:
We can see that the triangles have a scale factor of 3.
1 * 3 = 3 (AB and DE)
2 * 3 = 6 (BC and EF)
However...
2 * 3 = 6 not 7 (AC and DF)
4, 5 & 6 were answered on another question plus the circle isn't shown on this one.
7. semi circle is half a circle, there re 4 arcs smaller then half
they are DB, DC, AC and AB
last choice is correct
22-12=35x
10=35x
10/35=x
2/7=x
your answer is
x= 2/7
