Calculating Area and Perimeter of Rectangles with Fractions

Miss Hearn explains how to find the perimeter and area of a rectangle. She identifies the rectangle by its 90-degree angles and provides a step-by-step guide to calculating the perimeter using both mixed and improper fractions. She demonstrates how to use a TI-30X 2S calculator for these calculations. The video also covers calculating the area of the rectangle, emphasizing the use of square units.

What shapes' perimeter and area are being calculated in the video?

• Triangle

• Rectangle

• Circle

• Square

How do you convert a mixed number to an improper fraction?

• Multiply the whole number by the denominator and subtract the numerator.

• Multiply the whole number by the numerator and add the denominator.

• Multiply the whole number by the denominator and add the numerator.

• Divide the whole number by the denominator and add the numerator.

What is the formula for the perimeter of a rectangle?

• Length * Width

• Length + Width

• 2 * (Length + Width)

• 2 * Length + 2 * Width

How is the perimeter of the given rectangle calculated?

• 2 * Length + 2 * Width

• Length + Width + Height

• Adding all sides

• Multiplying length by width

What is the perimeter of the rectangle in the video?

• 13

• 13 and 1/3 centimeters

• 40/3 centimeters

• 11 centimeters

What is the formula for the area of a rectangle?

• Length + Width

• 2 * (Length + Width)

• Length / Width

• Length * Width

How can the area of a rectangle be calculated using a mixed number?

• Add the number to itself

• Multiply as is

• Subtract the fraction from the whole number

• Convert to an improper fraction first

What is the area of the rectangle discussed in the video?

• 11 square centimeters

• 13 and 1/3 square centimeters

• 40/3 square centimeters

• 9 square centimeters

Which calculator function is used for converting between mixed number and improper fraction notation?

• 2nd + Fraction key

• Fraction key

• Mode key

• Alpha key

What is the significance of square units in measuring area?

• It is used for measuring angles.

• It represents the two-dimensional space covered.

• It signifies linear measurement.

• It indicates volume.