To calculate the area of a rhombus using the diagonal method, you can use the following formula:

Area = (d1 * d2) / 2

where d1 and d2 are the lengths of the diagonals of the rhombus.

Here’s how you can use this formula with a calculator:

1. Measure the length of the diagonals of the rhombus.
2. Enter the value of d1 into your calculator.
3. Multiply d1 by d2.
4. Divide the result by 2.
5. The result is the area of the rhombus.

For example, let’s say the length of the first diagonal (d1) is 10 cm and the length of the second diagonal (d2) is 8 cm. To calculate the area of the rhombus, we can use the formula:

Area = (d1 * d2) / 2

Area = (10 cm * 8 cm) / 2

Area = 80 cm^2

Therefore, the area of the rhombus is 80 square centimeters.

To find the area of a rhombus using the diagonal method, follow these steps:

1. Measure the length of the diagonals of the rhombus.
2. Multiply the lengths of the diagonals.
3. Divide the result by 2.
4. The result is the area of the rhombus.

Here’s the formula:

Area = (diagonal 1 * diagonal 2) / 2

Let’s say the length of the first diagonal (d1) is 8 cm and the length of the second diagonal (d2) is 6 cm. To find the area of the rhombus using the diagonal method, we can plug in the values into the formula:

Area = (8 cm * 6 cm) / 2

Area = 48 / 2

Area = 24 square centimeters

Therefore, the area of the rhombus is 24 square centimeters.