Find the PERIMETER of this triangle

Question

asked May 28, 2019 202k views

2 Answers

Johnny Pauling · Answer 1 · 2019-05-30T19:34:05+0000

Answer: The perimeter of the triangle given is: " 24 units " .
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Step-by-step explanation:
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To find the perimeter of the triangle, we add up the lengths of
all 3 (THREE) sides of the triangle; and we have the answer!
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The triangle given is a "right triangle.

We are given the length of 2 (TWO) of the sides: "6 units" ; and "10 units (the length of the hypotenuse).
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We can find the "unknown side length" by using the "Pythagorean theorem" (since this is a "right trangle"):

→ a² + b² = c² ;

in which : "c" is the hypotenuse; which is: "10" (given);

Let "b" represent the known side length, which is "6" (given).

Solve for "a" (the "unknown" side length).

→ a² + 6² = 10² ; Solve for "a" ;

→ a² = 10² – 6² = 100 – 36 = 64 .

↔ a² = 64 .

Now, take the positive square root of each side of the equation;
to isolate "a" on one side of the equation; & to solve for "a" ;

→ ⁺√(a²) = √64 ;

→ a = 8 .
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Now, to find the "perimeter" of the triangle, we add up all of the side lengths:

6 + 8 + 10 = 14 + 10 = 24 .
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Answer: The perimeter of the triangle given is: " 24 units " .
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Yalewzj · Answer 2 · 2019-06-02T12:00:48+0000

First we need to find the missing side, use

$a = \sqrt{ {c}^(2) - {b}^(2) }$
So the missing leg = the sqrt of the hypotenuse squared minus the other leg squared.

Let's substitute the numbers,

$a = \sqrt{ {10}^(2) - {6}^(2) }$
Solve for the squares,

a = √(100 - 36)