Answer:
7238 cm³
Step-by-step explanation:
The radius of the great circle is the radius of the sphere.
The formula for the volume of a sphere is
V = ⁴/₃πr³
V = ⁴/₃π (12)³ = ⁴/₃π × 1728 = 2304π cm³ ≈ 7238 cm³
x=# of boys
x+7=# of girls
x+x+7=25
2x+7=25
2x=25-7
2x=18
x=18/2
x=9 boys
x+7=16 girls
If you don't understand variables use trial and error.
Boys Girls
1 8
2 9
3 10
4 11
5 12
6 13
7 14
8 15
9 16 9+16=25 students
You could start this way...
12 13
11 14
10 15
9 16 16 is 7 more than 9
-7 and 5
-7*5= -35
-7+5=-2
5 units
By Pythagoras theorem:
