1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Jan 29­5:19 PM

ADV Math 7 1/22/20 Agenda

• Warm Up• Review homework• Working Backwards with Formulas Notes and Examples• Homework: Finish working backwards with formulas WS &

study guide-- test tomorrow!!

1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Feb 19­7:34 PM

Warm Up - Find the area of the composite shapes

1.

2.

3. Find the area of the shaded region.

1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Homework

1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Mar 14­10:45 AM

I can find the area of an irregular figure by decomposing it into shapes with areas that I know.

Learning Target:

1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Jan 28­2:15 PM

The area of a rectangle is 24 square centimeters. If the length is 8 cm, what is the width?

Discuss the question below with your table group. Raise your hand when your group can show us an EQUATION that could help solve the problem.

What is the formula for area of a rectangle?

What information do we know?

1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Jan 28­2:16 PM

The area of a trapezoid is 50 square feet. If the bases measure 15 feet and 10 feet, what is the height?

What is the formula for area of a trapezoid?

What information do we know?

1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Jan 28­2:16 PM

What is the formula for circumference of a circle?

What information do we know?

The circumference of a circle is 43.96 square inches. What is the length of the radius?

1.22.20 Working backwards with formulas.notebook

8

January 22, 2020

Jan 28­2:16 PM

The area of a triangle is 60 square centimeters. If the height is 12 cm, what is the length of the base?

What is the formula for area of a triangle?

What information do we know?

1.22.20 Working backwards with formulas.notebook

9

January 22, 2020

Jan 28­2:17 PM

The area of a parallelogram is 144 square inches. If the base measures 16 inches, what is the height?

What is the formula for area of a parallelogram?

What information do we know?

1.22.20 Working backwards with formulas.notebook

10

January 22, 2020

Jan 28­2:17 PM

The area of a circle is 50.24 square inches. What is the length of the radius?

What is the formula for area of a circle?

What information do we know?

1.22.20 Working backwards with formulas.notebook

11

January 22, 2020

Jan 28­2:17 PM

The area of a trapezoid is 80 square feet. If the bases measure 12 feet and 4 feet, what is the height of the trapezoid?

What is the formula for area of a trapezoid?

What information do we know?

1.22.20 Working backwards with formulas.notebook

12

January 22, 2020

Feb 20­11:12 AM

Wrap-Up

1. How do we find the area of an irregular figure?

2. How do we find the area of a shaded region?

1.22.20 Working backwards with formulas.notebook

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January 22, 2020

Mar 13­10:48 AM

Study Guide!

1.22.20 Working backwards with formulas.notebook

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January 22, 2020