This 4 by 2 by 3 rectangular solid has 24 cubic units.Īltogether there are 24 cubic units. To calculate the rectangle area, use the formula below. Can you tell how many cubic units there are altogether? Let’s look layer by layer.īreaking a rectangular solid into layers makes it easier to visualize the number of cubic units it contains. For instance, consider that you have to calculate the area of a rectangle that has a length of 3 meters and a width of 4 meters. The rectangular solid shown in the image below has length 4 units, width 2 units, and height 3 units. Its dimensions are the length, width, and height. This wooden crate is in the shape of a rectangular solid.Įach crate is in the shape of a rectangular solid. Rectangles Another way to find the area of a rectangle is to multiply its length by its width. Step 3: Write down the answer in square units. For this rectangle, drawn on centimetre grid paper, the area is 18 square centimetres. Step 1: Note the value and units of length and width from the given question or example. The area of a rectangle is the size of the region inside it. The amount of space inside the crate is the volume, a cubic measure. There are 3 standard steps to calculate the area of a rectangle given its length and width. Formula of Perimeter of a Rectangle Calculator The formula for the perimeter of a rectangle can be stated as: P 2 × (a + b) Where: a is the length of the rectangle, and b is the width of the rectangle. The amount of paint needed to cover the outside of each box is the surface area, a square measure of the total area of all the sides. Area of a rectangle a × b Where: a is the length of the rectangle, b is the width of the rectangle. Find the volume and surface area of a rectangular solidĪ cheerleading coach is having the squad paint wooden crates with the school colors to stand on at the games.
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