by: apollo zhang and ben houtman. to teach you guys how to calculate the surface area and volume for...
DESCRIPTION
A = 1 cm B = 4 cmTRANSCRIPT
EXAMPLES TO HELP YOU
By: Apollo Zhang and
Ben Houtman
Objective:
To teach you guys how to calculate the surface area and volume for cones and cylinders.
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
S = square root Of h2 and r2
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
S = square root Of h2 and r2
S = sq root of 2 + 16
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
S = square root Of h2 and r2
S = sq root of 2 + 16
S = 4.24
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
S = 4.24
πr2 + πrs= (3.14)12 +(3.14)(4)(4.24)
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
S = 4.24
πr2 + πrs= 6.28 + 53.25
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
S = 4.24
πr2 + πrs= 6.28 + 53.25
A = 59.53
Example 1Find the Surface Area:
A = 1 cmB = 4 cm
Formula: πr2 + πrs A = radius
B = height
S = 4.24
πr2 + πrs= 6.28 + 53.25
A = 59.53 cm3
Example 2 Find the Surface Area:Formula =
2πr2 + 2πrh
a = 6b = 16
Example 2 Find the Surface Area:Formula =
2πr2 + 2πrh
a = 6 mb = 16 m
Height = 6 Radius = ½ of diameter (8)
Example 2 Find the Surface Area:Formula =
2πr2 + 2πrh
a = 6 mb = 16 m
Height = 6 Radius = ½ of diameter (8)
2πr2 + 2πrh= 2(3.14)(8)2 + 2(3.14)(8)(6)
Example 2
Find the Surface Area:Formula = 2πr2 + 2πrh
a = 6 mb = 16 m
Height = 6 Radius = ½ of diameter (8)
2πr2 + 2πrh= 2(3.14)(8)2 + 2(3.14)(8)(6)
= 401.92 + 301.44
Example 2
Find the Surface Area:Formula = 2πr2 + 2πrh
a = 6 mb = 16 m
Height = 6 Radius = ½ of diameter (8)
2πr2 + 2πrh= 2(3.14)(8)2 + 2(3.14)(8)(6)
= 401.92 + 301.44A = 703.36 m3
Example 3 Find the Volume:
Formula: r2 h
a = 4.8 cm b = 6 cm
Radius: 4.8Height: 6
Example 3 Find the Volume:
Formula: r2 h
a = 4.8 cm b = 6 cm
Radius: 4.8Height: 6
πr2 h= (3.14)(4.82)(6)
Example 3 Find the Volume:
Formula: r2 h
a = 4.8 cm b = 6 cm
Radius: 4.8Height: 6
πr2 h= (3.14)(4.82)(6)
A = 434.07 cm3
Example 4 Find the Volume:
Formula: 1/3πr2h
a = 2.5 mb = 4.1 m
Example 4 Find the Volume:
Formula: 1/3πr2h
a = 2.5 mb = 4.1 m
Height = 4.1Radius = 2.5
Example 4 Find the Volume:
Formula: 1/3πr2h
a = 2.5 mb = 4.1 m
Height = 4.1Radius = 2.5
1/3πr2h= (0.33)(3.14)(2.52)(4.1)
Example 4 Find the Volume:
Formula: 1/3πr2h
a = 2.5 mb = 4.1 m
Height = 4.1Radius = 2.5
1/3πr2h= (0.33)(3.14)(6.25)(4.1)
= 26.55A = 26.55 m3