Hello friends! Today, we’re going to learn how to find the area of a rhombus. A rhombus is a special shape in geometry that looks like a diamond. It has four sides that are all the same length, and its opposite sides are parallel. The opposite angles are equal, but they are not all 90 degrees, or it would be a square!
Think of a rhombus as a squished square. It can be measured in square inches, square feet, square miles, and other units. The area of a rhombus is the space inside it, measured in square units.
To find the area of a rhombus, we use a simple formula. The area is equal to the first diagonal times the second diagonal, divided by two. Diagonals are lines that connect opposite corners of the rhombus. One diagonal is usually longer than the other, so we call the longest one “d1” and the shortest one “d2.”
Let’s practice! Imagine a rhombus with a longest diagonal of 15 inches and a shortest diagonal of 8 inches. To find the area, we multiply 15 by 8 to get 120. Then, we divide 120 by 2 to get 60. So, the area of this rhombus is 60 square inches. That means 60 little square inch tiles could fit inside!
Here’s another example. Anna has a kite shaped like a rhombus. The longest diagonal is 30 inches, and the shortest diagonal is 16 inches. To find the area, we multiply 30 by 16 to get 480. Then, we divide 480 by 2 to get 240. So, Anna’s kite has an area of 240 square inches. Awesome!
Knowing how to calculate the area of a rhombus is super useful. Just remember: multiply the longest diagonal by the shortest diagonal and divide by two. Now you’re ready to find the area of any rhombus you come across!
Thanks for learning with us today! If you enjoyed this, there are many more fun and educational videos you can watch. Keep exploring and learning new things!
Rhombus Hunt: Go on a rhombus hunt around your home or school! Look for objects that have the shape of a rhombus, like certain tiles, windows, or even a kite. Draw a picture of each rhombus you find and measure the diagonals using a ruler. Calculate the area of each rhombus using the formula you learned: Area = (d1 × d2) / 2. Share your findings with your classmates!
Build Your Own Rhombus: Use craft sticks or straws to create a rhombus. Cut the sticks or straws to the same length for the sides. Then, use string to connect opposite corners and form the diagonals. Measure the diagonals and calculate the area. Try making rhombuses of different sizes and compare their areas. Which one has the largest area?
Rhombus Art: Create a piece of art using rhombus shapes. Cut out rhombuses from colored paper and arrange them to form a pattern or picture. Measure the diagonals of each rhombus and calculate their areas. Write the area on each rhombus. Display your artwork and explain how you calculated the areas to your family or friends!
Here’s a sanitized version of the YouTube transcript:
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Hello friends! Today, we are going to show you how to calculate the area of a rhombus, also known as the surface area of a rhombus.
Let’s start by remembering what a rhombus is. A rhombus is a parallelogram with four equal sides. Its opposite sides are parallel, and its opposite angles are equal, which must be different from each other. This means that not all angles can be 90 degrees, as that would make it a square.
The surface area can be measured in square inches, square feet, square miles, and many other units of measurement. As you can see in this image, the area of the rhombus is the number of square units that the figure contains inside.
To calculate the area of the rhombus, we must use the following formula: the area of a rhombus is equal to the first diagonal times the second diagonal, divided by two. Diagonals are lines that go from one vertex to another vertex. There is one diagonal longer than the other; that is why we call the longest diagonal “d1” and the shortest diagonal “d2.”
Let’s practice! The longest diagonal of this rhombus measures 15 inches, and the shortest diagonal measures 8 inches. What will its area be?
To calculate the area of a rhombus, we multiply the longest diagonal by the shortest diagonal and then divide by 2. That is, 15 times 8 equals 120, and 120 divided by 2 equals 60. Great! The area of this rhombus is equal to 60 square inches.
This rhombus fits 60 square inch squares. Well done!
Let’s look at another example. Anna has a rhombus-shaped kite. If the longest diagonal measures 30 inches and the shortest diagonal measures 16 inches, what is its total area?
Remember that we must multiply the longest diagonal by the shortest diagonal and then divide by two. Let’s see: 30 times 16 equals 480, and 480 divided by 2 equals 240. That’s great! We have helped Anna find out her kite’s area. Did you see that? That’s awesome!
As you have seen, knowing how to calculate the area of a rhombus is very important. All you have to do is multiply the longest diagonal by the shortest diagonal and divide the result by two.
Are you ready to calculate the area of the next rhombus you find? See you later!
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This version removes informal language and maintains a clear and educational tone.