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Finding perimeter when a side length is missing | Math | 3rd grade | Khan Academy
By Khan Academy
Lindsay finds the perimeter of a figure when a side length is not given.
Finding perimeter
By Khan Academy
Find perimeter of various shapes.������������
Grade 3 Math Perimeter 3 MD 8
By EngageNY
Solve real world problems involving perimeters of polygons, including finding the perimeter given the side lengths and finding an unknown side length
Basics of Area Perimeter and Volume of Rectangular Shapes.
By tecmath
This is a basic lesson in working out the perimeter area or volume or rectangular shapes. A house plan is used to show how to find the perimeter of a rectangle. Examples are shown for formulas of perimeter and area.
Perimeter of a shape
By Khan Academy
Find perimeter of various shapes.������������
Perimeter | MathHelp.com
By MathHelp.com
This lesson covers naming angles. Students learn the definition of an angle and the concept of measure, including the following vocabulary: side, vertex, protractor, degrees, right angle, acute angle, obtuse angle, and straight angle. Students also learn what assumptions can and cannot be made from a given figure.
Area and Perimeter - Khan Academy
By Khan Academy
Start by learning how to calculate the perimeter and area of squares, rectangles, and triangles. Note the explanation of why perimeter measurements are in meters and area measurements are in square meters.
Area for Kids
By
Math is fun! Learn about area in this math video for kids! You will learn the difference between perimeter and area, learn how area works and even learn how to find the area of rectangles and squares!
Calculating the area and the perimeter
By MathPlanetVideos
Calculate the perimeter and the area in feet
Word Problem Involving Perimeter of a Triangle - ex 2
By PatrickJMT
YouTube presents Word Problem Involving Perimeter of a Triangle - ex 2, an educational video resource on math.
Word Problem Involving the Perimeter of a Rectangle – Ex 1
By PatrickJMT
YouTube presents Word Problem Involving the Perimeter of a Rectangle, an educational video resource on math.
Part 2 of proof of Heron's formula | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Video shows that the expression in part 1 is identical to Heron's Formula. This video demonstrates how to use Heron's Formula to determine the area of a triangle while only knowing the lengths of the sides
Heron's formula | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Using Heron's Formula to determine the area of a triangle while only knowing the lengths of the sides. All Khan Academy content is available for free at www.khanacademy.org
Area of an equilateral triangle | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Finding the formula for the area of an equilateral triangle with side s. All Khan Academy content is available for free at www.khanacademy.org
Part 1 of proof of Heron's formula | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
In this video, the insructor explores and demonsrates the proof of Heron's Formula. The instructor demonstrates with computer software.
[4.MD.3-1.0] Area and Perimeter - Common Core Standard
By Freckle education
Apply the area formula for rectangles in real world and mathematical problems
[4.MD.3-2.0] Area and Perimeter - Common Core Standard
By Freckle education
Apply the perimeter formula for rectangles in real world and mathematical problems