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Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
May 9, 2017
Aim: SWBAT find the surface area of triangular prisms.
Do Now: Take out your homework
Homework: Page 5 (bottom) & Page 6 in the Unit 5C Packet
Unit 5 Take Home Assignment Due Tuesday May 16th
** Unit 5C Test is Friday, May 19th **
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
SA = 6s2
= 6 (6.2)2
= 230.64
SA = 230.64 in2
A = lw A = 10 x 5.7A = 57
A = lw A = 10 x 6.2A = 62
SA = top + bottom + front + back + side 1 + side 2 = 57 + 57 + 62 + 62 + 35.34 + 35.34 = 308.68
SA = 308.68 mm2
top/bottom side 1/side 2 front/backA = lw A = 5.7 x 6.2A = 35.34
SA = 6s2
= 6 (6)2
= 216
SA ≈ 216 in2
Estimate FIRST!!6.2 6
A = lw A = 10 x 6A = 60
A = lw A = 10 x 6A = 60
SA = top + bottom + front + back + side 1 + side 2 = 60 + 60 + 60 + 60 + 36 + 36 = 312
SA ≈ 312 mm2
side 1/side 2A = lw A = 6 x 6A = 36
top/bottom front/back
Estimate FIRST!!6.2 6 5.7 6
top
front side
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
https://www.mathsisfun.com/definitions/triangularprism.html
Triangular Prism
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
1 2 3
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Area of triangle base
12
12
A = bh
A = (6) (4)
A = 12
Area of rectangles 1 & 2
A = lwA = (8) (5) A = 40
Area of rectangle 3
A = lwA = (8) (6) A = 48
SA = 2 (area triangle base) + rectangle 1 + rectangle 2 + rectangle 3 = 2 (12) + 40 + 40 + 48 = 152 SA = 152 ft2
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Area of triangle base
12
12
A = bh
A = (6) (4)
A = 12
Area of rectangles 1 & 2
A = lwA = (8) (5) A = 40
Area of rectangle 3
A = lwA = (8) (6) A = 48
SA = 2 (area triangle base) + rectangle 1 + rectangle 2 + rectangle 3 = 2 (12) + 40 + 40 + 48 = 152 SA = 152 ft2
Estimate FIRST!!7.9 8 10.3 1018.5 1912.7 13
triangle base
12
12
A = bh
A = (10)(8)
A = 40
rectangle 1
A = lw
A = (19) (8)
A = 152
rectangle 2
A = lw
A = (10) (19)
A = 190
rectangle 3
A = lw
A = (19) (13)
A = 247
SA = 2 (area triangle base) + rectangle 1 + rectangle 2 + rectangle 3 = 2(40) + 152 + 190 + 247
= 669 SA ≈ 669 cm2
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Area of triangle base
12
12
A = bh
A = (9.9) (11.4)
A = 56.43
Area of rectangles 1 & 2
A = lw
A = (8.5) (25.2)
A = 214.2
Area of rectangle 3
A = lw
A = (9.9) (25.2)
A = 249.48
SA = 2 (area triangle base) + rectangle 1 + rectangle 2 + rectangle 3 = 2(56.43) + 214.2 + 214.2 + 249.48
= 790.74 SA = 790.74 cm2
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
triangle base
12
12
A = bh
A = (10.3)(7.9)
A = 40.685
rectangle 1A = lw
A = (18.5) (7.9)
A = 146.15
rectangle 2A = lw
A = (10.3) (18.5) A = 190.55
rectangle 3A = lw
A = (18.5) (12.7) A = 234.95
triangle base
12
12
A = bh
A = (10)(8)
A = 40
rectangle 1A = lw
A = (19) (8)
A = 152
rectangle 2A = lw
A = (10) (19) A = 190
rectangle 3A = lw
A = (19) (13) A = 247
Estimate FIRST!!7.9 8 10.3 1018.5 1912.7 13
SA = 2 (area triangle base) + rectangle 1 + rectangle 2 + rectangle 3
= 2(40) + 152 + 190 + 247
= 669SA = 653.02 cm2
= 2(40.685) + 146.15 + 190.55 + 234.95
= 653.02
SA ≈ 669 cm2
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
Day 02 Surface Area of Triangular Prisms.notebook May 09, 2017
