surface area 7th grade

Presentation

•

Mathematics

•

6th - 7th Grade

•

Medium

•

CCSS

7.G.B.6, 6.G.A.1

Standards-aligned

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7 Slides • 3 Questions

surface area 7th grade

notes

what were going to learn in this lesson

understanding surface area
being able to find surface area
identifying surface area

what is surface area?

surface area is the total surface of a 3D figure .

key words for finding surface area

around
cover
wrapped

triangular prisms

have 5 sides
2 triangles
2 side rectangles
1 bottom rectangle

rectangular prisms

have 6 sides
2 squares
1 top rectangle
1 bottom rectangle
1 front rectangle
1 back rectangle

formulas

area of a triangle = lxwxh/2 OR bxh/2
surface area of a triangular prism = find the area of all sides and add.
area of a rectangle = lxw
area of a rectangular prism= find the area of all sides then add
area of a cube = lxw
surface area of a cube = find the area of all sides and add

Multiple Choice

Find the surface area of this figure.

148 cm²

120 cm²

158 cm²

208 cm²

Multiple Choice

How do you find the AREA of a TRIANGLE?

Length x Width divided by 2

Length x width

1/3 (Length x width)

Base x Height

Multiple Choice

What is the total surface area of the triangular prism shown?

468 in²

540 in²

576 in²

700 in²

surface area 7th grade

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