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find the length of the missing measure . Round to the nearest tenth

Find The Length Of The Missing Measure Round To The Nearest Tenth class=

Sagot :

Since we have a right triangle, we can apply Pythagorean theorem. The hypotenuse is always in from of the righ angle, then we can write

[tex]18^2=x^2+9^2[/tex]

which gives

[tex]324=x^2+81[/tex]

By subtracting 81 to both sides, we have

[tex]\begin{gathered} 243=x^2 \\ or\text{ equivalently,} \\ x^2=243 \end{gathered}[/tex]

By taking square root to both sides, we get

[tex]\begin{gathered} x=\sqrt[]{243} \\ x=15.588 \end{gathered}[/tex]

Therefore, by rounding to the nearest tenth, the answer is 15.6 units