Math  /  Geometry

QuestionAnswer Attempt 1 out of 2
Estimated length of QS=4.3 cm\overline{Q S}=4.3 \mathrm{~cm} The actual length of QS=\overline{Q S}= \square cm (round to 3 decimal places)

Studdy Solution

STEP 1

1. The triangle is a right triangle with sides RQ \overline{RQ} , QS \overline{QS} , and hypotenuse RS \overline{RS} .
2. The length of RQ \overline{RQ} is 5cm 5 \, \text{cm} .
3. The length of the hypotenuse RS \overline{RS} is 6.6cm 6.6 \, \text{cm} .
4. We need to find the length of QS \overline{QS} using the Pythagorean Theorem and round the result to three decimal places.

STEP 2

1. Apply the Pythagorean Theorem to find the length of QS \overline{QS} .
2. Calculate and simplify the expression.
3. Round the result to three decimal places.

STEP 3

Apply the Pythagorean Theorem, which states that in a right triangle, the square of the length of the hypotenuse (cc) is equal to the sum of the squares of the lengths of the other two sides (aa and bb):
c2=a2+b2 c^2 = a^2 + b^2
Here, c=6.6cm c = 6.6 \, \text{cm} , a=5cm a = 5 \, \text{cm} , and b=QS b = \overline{QS} .
(6.6)2=(5)2+(QS)2 (6.6)^2 = (5)^2 + (\overline{QS})^2

STEP 4

Calculate the squares:
6.62=43.56 6.6^2 = 43.56 52=25 5^2 = 25
Substitute these values into the equation:
43.56=25+(QS)2 43.56 = 25 + (\overline{QS})^2

STEP 5

Solve for (QS)2 (\overline{QS})^2 :
(QS)2=43.5625 (\overline{QS})^2 = 43.56 - 25 (QS)2=18.56 (\overline{QS})^2 = 18.56

STEP 6

Take the square root of both sides to find QS \overline{QS} :
QS=18.56 \overline{QS} = \sqrt{18.56}

STEP 7

Calculate the square root and round to three decimal places:
QS4.309 \overline{QS} \approx 4.309
The actual length of QS \overline{QS} is:
4.309cm \boxed{4.309 \, \text{cm}}

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