Dimostrazioni Simb Siano \( A C, C D \) e \( D B \) tre segmenti adiacenti, tali che \( A C \equiv D B \). Dimostra che il punto medio di \( A B \) è anche il punto medio di \( C D \).

1 Choose the correct answer from those given: \( \begin{array}{llll}\text { (1) The distance between the point }(-4,-3) \text { and the } X \text {-axis equals ............ length u } \\ \begin{array}{llll}\text { (a) }-3 & \text { (b) } 3 & \text { (c) } 4 & \text { (d) }-4\end{array}\end{array} l^{\circ} \)

Figure 4.27 The areas of two similar triangles are \( 64 \mathrm{~cm}^{2} \) and \( 144 \mathrm{~cm}^{2} \), a) Find the ratio of their altitudes. b) If the perimeter of the smaller triangle is 49 cm , find the perimeter of the larger triangle.

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

एक गोलाकार काँच के बर्तन की एक बेलन के आकार की गर्यन है, जिसकी सम्बाई 7 सेमी तया व्यास 2 सेमी है, जबकि गोलाकार भाग का व्यास 8.4 सेमी है। छ्रात कीजिए कि बर्तन में कितना पानी भरा जा सकता है?

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 \( 125^{\circ} \).