Calculate the Area of a Deltoid: Using 4 and 6 Unit Diagonals

Given the deltoid ABCD

Find the area

666444AAABBBCCCDDD

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find the area of the kite
00:03 We will use the formula to calculate the area of a kite
00:07 (diagonal times diagonal) divided by 2
00:13 We'll substitute the appropriate values according to the given data and solve for the area
00:26 We'll divide 4 by 2
00:33 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Given the deltoid ABCD

Find the area

666444AAABBBCCCDDD

2

Step-by-step solution

To find the area of deltoid ABCDABCD, we will use the known formula for the area of a deltoid based on its diagonals. Let's perform the calculation step-by-step:

  • Step 1: Identify the diagonals
    From the problem, the diagonals are given as 4 cm and 6 cm.
  • Step 2: Apply the area formula
    The area of a deltoid is calculated using the formula: A=12×d1×d2 A = \frac{1}{2} \times d_1 \times d_2
  • Step 3: Calculate the area
    Substitute the diagonal lengths into the formula: A=12×4×6 A = \frac{1}{2} \times 4 \times 6
  • A=12×24=12A = \frac{1}{2} \times 24 = 12 cm²

Thus, the area of deltoid ABCDABCD is 12\mathbf{12} cm².

3

Final Answer

12 12 cm².

Practice Quiz

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Look at the deltoid in the figure:

555666

What is its area?

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