Geometry Concepts and Area Formulas

The video tutorial covers the calculation of areas for various two-dimensional shapes, including rectangles, circles, triangles, and trapezoids. It begins with an introduction to the importance of understanding area and volume, followed by detailed steps and examples for each shape. The tutorial emphasizes the use of formula sheets and calculators, and it provides guidance on rounding and unit conversion.

What is the first step in understanding the volume unit in Math 3?

• Understanding area of 2D shapes

• Memorizing volume formulas

• Learning about 3D shapes

• Practicing multiplication

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do you calculate the area of a rectangle?

• Length divided by width

• Length times width

• Length minus width

• Length plus width

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CCSS.7.G.B.4

What is the formula for the area of a circle?

• Pi times diameter squared

• Pi times radius squared

• Diameter times radius

• Pi times diameter

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CCSS.7.G.B.4

If the diameter of a circle is 22 inches, what is the radius?

• 11 inches

• 22 inches

• 44 inches

• 5.5 inches

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CCSS.6.G.A.1

What is the formula for the area of a triangle?

• Base divided by height

• One half times base times height

• Base plus height

• Base times height

In a triangle, where does the height extend from?

• From the base to the opposite side

• From the vertex to the base

• From the base to the vertex

• From the midpoint to the base

Tags

CCSS.6.G.A.1

What is the area of a triangle with a base of 5 and height of 14?

• 35 square units

• 70 square units

• 10 square units

• 50 square units

What are the bases in a trapezoid?

• The two sides that are longest

• The two sides that are equal

• The two sides that are parallel

• The two sides that are perpendicular

Tags

CCSS.6.G.A.1

How do you calculate the area of a trapezoid?

• Base times height

• One half times height times the sum of the bases

• Base plus height

• Height divided by base

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CCSS.5.MD.A.1

What should you do if measurements are in different units?

• Use the smallest unit

• Use the largest unit

• Convert all measurements to the same unit

• Ignore the units

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CCSS.5.MD.A.1