3 The area of a triangle is \( 10 \mathrm{~cm}^{2} \). If the base of the triangle were increased by \( 10 \% \) and the height of the triangle were decreased by \( 10 \% \), what would be the area of the new resulting triangle?

در یک مثلث 45°-45°-90°, اگر طول یکی از اضلاع برابر با 8 واحد باشد، طول وتر را محاسبه کنید.

1. If a rectangle has a length of 10 m and a height of 5 m , what is its perimeter?

If two vertically opposite angles are supplementary, then the measure of each angle of them equals \( \begin{array}{llll}\text { (a) } 45^{\circ} & \text { (b) } 60^{\circ} & \text { (c) } 90^{\circ} & \sqrt{3}\end{array} \)

Arc Length Find the arc length for the following. 13. A circle has a radius of 5.75 inches. Find the length of the arc intercepted by a central angle of \( \frac{5 \pi}{6} \). 14. A circle has a diameter of 10 inches. Find the length of the arc intercepted by a central angle of \( 125^{\circ} \).

Determine if the following lines are parallel, perpendicutar, or neither. \[ \begin{array}{l}y=\frac{x}{3}-7 \\ y=-3 x+5\end{array} \]