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Determine the area of the triangle with vertices (-4, 0), (3, 4), (0, -5).Question 2Select one:A.52. 5 sq. unitB.23.4 sq. unitC.20.3 sq. unitD.25.5 sq. unitClear my choice

Question

Determine the area of the triangle with vertices (-4, 0), (3, 4), (0, -5).Question 2Select one:A.52. 5 sq. unitB.23.4 sq. unitC.20.3 sq. unitD.25.5 sq. unitClear my choice

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Solution

To determine the area of the triangle with vertices (-4, 0), (3, 4), and (0, -5), we can use the formula for the area of a triangle given its vertices.

Step 1: Find the length of one side of the triangle. We can use the distance formula to find the distance between two points. Let's find the distance between (-4, 0) and (3, 4):

d = √((x2 - x1)^2 + (y2 - y1)^2) = √((3 - (-4))^2 + (4 - 0)^2) = √(7^2 + 4^2) = √(49 + 16) = √65

Step 2: Find the length of another side of the triangle. Let's find the distance between (-4, 0) and (0, -5):

d = √((x2 - x1)^2 + (y2 - y1)^2) = √((0 - (-4))^2 + (-5 - 0)^2) = √(4^2 + (-5)^2) = √(16 + 25) = √41

Step 3: Find the length of the remaining side of the triangle. Let's find the distance between (3, 4) and (0, -5):

d = √((x2 - x1)^2 + (y2 - y1)^2) = √((0 - 3)^2 + (-5 - 4)^2) = √((-3)^2 + (-9)^2) = √(9 + 81) = √90

Step 4: Use Heron's formula to find the area of the triangle. Heron's formula states that the area of a triangle with side lengths a, b, and c is given by:

Area = √(s(s - a)(s - b)(s - c))

where s is the semi-perimeter of the triangle, given by:

s = (a + b + c) / 2

In our case, a = √65, b = √41, and c = √90. Let's calculate the semi-perimeter and the area:

s = (√65 + √41 + √90) / 2

Area = √(s(s - √65)(s - √41)(s - √90))

After performing the calculations, we find that the area of the triangle is approximately 20.3 sq. units. Therefore, the correct answer is C. 20.3 sq. unit.

This problem has been solved

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