Math Problem Statement

FIND THE PERIMETER OF THE TRIANGLE WHOSE VERTICES ARE: A(3,0), B(5,2), C(7,6)

Solution

To find the perimeter of the triangle with vertices A(3,0)A(3, 0), B(5,2)B(5, 2), and C(7,6)C(7, 6), we first need to calculate the lengths of all three sides using the distance formula.

The distance formula between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is given by:

d=(x2x1)2+(y2y1)2d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

Step 1: Calculate ABAB

Using points A(3,0)A(3, 0) and B(5,2)B(5, 2):

AB=(53)2+(20)2=(2)2+(2)2=4+4=8=22AB = \sqrt{(5 - 3)^2 + (2 - 0)^2} = \sqrt{(2)^2 + (2)^2} = \sqrt{4 + 4} = \sqrt{8} = 2\sqrt{2}

Step 2: Calculate BCBC

Using points B(5,2)B(5, 2) and C(7,6)C(7, 6):

BC=(75)2+(62)2=(2)2+(4)2=4+16=20=25BC = \sqrt{(7 - 5)^2 + (6 - 2)^2} = \sqrt{(2)^2 + (4)^2} = \sqrt{4 + 16} = \sqrt{20} = 2\sqrt{5}

Step 3: Calculate ACAC

Using points A(3,0)A(3, 0) and C(7,6)C(7, 6):

AC=(73)2+(60)2=(4)2+(6)2=16+36=52=213AC = \sqrt{(7 - 3)^2 + (6 - 0)^2} = \sqrt{(4)^2 + (6)^2} = \sqrt{16 + 36} = \sqrt{52} = 2\sqrt{13}

Step 4: Calculate the Perimeter

The perimeter PP of the triangle is the sum of all three sides:

P=AB+BC+AC=22+25+213P = AB + BC + AC = 2\sqrt{2} + 2\sqrt{5} + 2\sqrt{13}

We can factor out the 2:

P=2(2+5+13)P = 2(\sqrt{2} + \sqrt{5} + \sqrt{13})

This is the exact perimeter of the triangle. If you prefer an approximate value, you can calculate:

P2(1.414+2.236+3.606)=2(7.256)14.512P \approx 2(1.414 + 2.236 + 3.606) = 2(7.256) \approx 14.512

Thus, the approximate perimeter of the triangle is 14.512\approx 14.512 units.

Would you like more details or have any questions?


Here are 5 related questions:

  1. How do you find the area of a triangle with given vertices?
  2. What is the formula for calculating the distance between two points?
  3. How do you find the slope of a line between two points?
  4. What is the difference between exact and approximate values in geometry?
  5. How do you classify triangles by their sides and angles?

Tip: Always double-check your calculations, especially when working with square roots and distances!

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Math Problem Analysis

Mathematical Concepts

Geometry
Distance Formula
Perimeter Calculation

Formulas

Distance formula: d = √((x2 - x1)^2 + (y2 - y1)^2)
Perimeter formula: P = sum of all side lengths

Theorems

Distance Formula

Suitable Grade Level

Grades 8-10