Learn Math Part 37
Review: R=7 H=6 volume of cylinder
923.16
What the formula for area of a circle?
pi x r2
what the slope intercept form equation
y=mx+b
(0,5) move up 5 and right 7
(7,10)
6 4 8 2 5
2, 4, 5, 6, 8
Review: R=9 H=3 find volume of cone
254.34
What the formula for volume of a cylinder?
pi x r2 x h
How to find b
(y-y1)=m(x-x1)
(9,8) move up 5 left 4
(5,13)
1 0.8 8 6 0.55
0.55, 0.8, 1, 6, 8
Review: D=7 volume of sphere
179.5
what the formula of volume of a cone?
1. 1/3 x pi x r2 x h
2. pi x r2 x h divide by 3
How to find volume
V=BxH
(5,7) move down 9 left 6
(-1,-2)
55 1/7 4 99 55.1
1/7, 4, 55, 55.1, 99
Example: start at (0,0) move up 5 up, 4 left
1. graph (-4,5)
0,0 move right 3 up 7
(3,7)
what the formula of volume of a sphere?
4/3 x pi x r3
how to Find area
A=LxW
(-4,5) move right 9 up 4
(5,9)
-66 55 66 44 5.8
-66, 5.8, 44, 55, 66
Example: 1, -1
1. put them in order -1, 1
0.8, 1/4 5
1/4, 0.8, 5
what the formula of volume of hemisphere
1. 2/3 x pi x r3
2. 4/3 x pi x r3 divide by 2
is this an equation? 2x+5=15
extra points solve for x
yes
x=5
(-6,-5) move left 5 up 7
(-11,2)
9 0.5 10/5 77 -100
-100, 0.5, 10/5, 9, 77