Unit 9 Formulas - WordPress.com · 09/04/2017 · Geo 9.5 Day 1 SA Prisms Section 9.5 - day 1...
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Geo 9.5 Day 1 SA Prisms warm-up after 9.4: Name the polyhedron. Find the number of faces, vertices, and edges of polyhedron. Check your answer using Euler's Theorem. Name _______________________ F: _____ V: _____ E: _____ Check: Unit 9 Formula Bring a calculator everyday!
Transcript of Unit 9 Formulas - WordPress.com · 09/04/2017 · Geo 9.5 Day 1 SA Prisms Section 9.5 - day 1...
Geo 9.5 Day 1 SA Prisms
warm-up after 9.4:
Name the polyhedron. Find the number of faces, vertices, and edges of polyhedron. Check your answer using Euler's Theorem.
Name _______________________
F: _____
V: _____
E: _____
Check:
Unit 9 Formulas
Bring a calculator
everyday!
Geo 9.5 Day 1 SA Prisms
Section 9.5 - day 1Learning Target: Apply formulas to find the surface area of 3D solids.
In 9.3,...What is this solid? Find the
Surface Area.________________________
Geo 9.5 Day 1 SA Prisms
Surface Area Prism= 2 • Base Area + lateral surface areas
rectangles
1. Draw and label base.
Find the surface area.Show all work!
Now Name the solid _________________________
rectangles
4. Find total surface area of a prism.
3. Find lateral surface area.
2. Find base area. (HINT: draw ALL the _________________)
SA = (2 • Base Area) + lateral SA = ____________ + ______ = ________
(area of ALL rectangles)
BA = ______ Lateral SA = _____
Geo 9.5 Day 1 SA Prisms
Find the surface area.Show all work!
Name the solid ______________________
RC
Draw and label base. Find lateral SA.
Find base area.
Total SA = (2 • Base Area) + lateral SA
(draw all rectangles and find their areas)
BA = ______Lateral SA = _____
= ____________ + ______ = _________
need to use pyth. th on the base
Find the surface area.Show all work!
Name the solid ______________________
RC
Draw and label base.
Total SA = ____________ + ______
Geo 9.5 Day 1 SA Prisms
158
560
Working backwards...
Given the surface area = 560 in2, find the value of x.
Draw and label base.
Find lateral SA.
Use SA formula for a prism to find value of x.
SA = ( 2 • Base Area ) + lateral SA
(in terms of x)
(Plug in known values)
need to use pyth. th on the base
Assignment:Section 9.5 Day 1
WorksheetShow all work!
Surface Area Prism= 2 • Base Area + lateral surface areas
rectangles
Geo 9.5 Day 1 SA Prisms
Geometry 9.5 Day 1 SA of Prism Wksht Answers
1. Rectangular Prism Total SA = 136
2. Octagonal Prism Total SA = 18771.2
3. Triangular Prism Total SA = 168
4. Hexagonal Prism Total SA = 4410
5. x = 5
6. Total SA of EXPOSED AREAS = 4100
MUST SHOW WORK!!
