Q5. Uniatuola rotonda il cui diametro misura * 36 me circondata da un sentiero largo 1 m . > Calcola l'area del sentiero.

8. Dans le plan muni d'un repère \( (0, \vec{i}, j) \), on donne le point \( A(-2 ; 3) \), les vecteurs \( \begin{array}{l}\vec{u}=\vec{i}+\vec{j} \text { et } \vec{v}=\vec{i}-\vec{j} \\ 1^{\circ} \text { Démontrer que le couple }(\vec{u}, \vec{v}) \text { est une base } \\ \text { du plan. }\end{array} \).

8. If \( \vec{P} \vec{Q}=P Q \), what is the angle between \( \vec{P} \) and \( \vec{Q} \) ?

The area of a trapezoid with bases a a b with height \( h \) is given by \( A=\frac{1}{2} h(a+b) \). If a carpenter needs to sheet rock a wall designed as a trapezoid with bases of \( \frac{1}{5} \) yards and \( \frac{13}{15} \) yards with a height of \( \frac{2}{3} \) yards, what is the area of the wall?

10. Find the equations of straight lines each of which is parallel to and at a distance of \( \sqrt{5} \) from the line \( x+2 y-7=0 \).

arallelogram B. square C. trapezold \( \quad \) D. rectangle raph the circle and find the equation. Use graphing paper. he endpoints of the radius are at \( (-4,3) \) and \( (4,-5) \) and the center lies at QIV.