Parallelograms and Rectangles

Presentation

•

Mathematics

•

6th Grade

•

Hard

James Gonzalez

FREE Resource

9 Slides • 7 Questions

Area of Rectangles and Parallelograms - Missing Part

Lesson Goals

Determine the base or height of a parallelogram when the area is given.
Determine the base or height of a rectangle when the area is given.
Solve real-world problems related to the area of parallelograms.

Standards

6.GM.4
Find the area of complex shapes composed of polygons by composing or decomposing into simple shapes; apply this technique to solve real-world and other mathematical problems.

Multiple Choice

Review:
Simplify this expression

48.9\ \cdot5.7

54.6

5.46

278.73

2787.3

Multiple Select

What is the formula for finding the are of a rectangle?

Area = depth x width

Area = base x height

Area = length x depth

Area = base x radius

Multiple Select

What is the formula for finding the are of a parallelogram?

Area = depth x width

Area = length x depth

Area = base x height

Area = base x radius

So if Area = bxh what if you know the area but need to know the height or base?

A=bh can also be
$\frac{A}{b}=h$ $\left(A\div d=h\right)$
and/or $\frac{A}{h}=b$ $\left(A\div h=b\right)$

Lets try one

What do we know?
$A=\ 88cm^2$ h = 8cm
So we are missing b.
$88cm^2=b\cdot\left(8cm\right)$
To solve = $\frac{88cm^2}{8cm}=b$

Fill in the Blanks

Type answer...

What about this one?

Is there any missing information?
What do we know?

Fill in the Blanks

Type answer...

What is the missing dimension?

What do we know?

Fill in the Blanks

Type answer...

Poll

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Area of Rectangles and Parallelograms - Missing Part

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