\( \begin{array}{l}\text { II perimetro di un quadrato misura } 256 \mathrm{~cm} \text {. } \\ \text { Calcola la sua area. }\end{array}\left[4096 \mathrm{~cm}^{2}\right] \).

Выяснить геометрический смысл соотношения \( \operatorname{Rez}=3 \)

Fig 9.16 \( A B C \) is isosceles with \( A B=A C=7.5 \mathrm{~cm} \) and \( \mathrm{BC}=9 \mathrm{~cm} \) (Fig 9.17). The height \( A D \) frum \( A \) to \( B C \), is 6 cm . Find the area of \( \triangle A B C \). What will be the height from \( C \) wABie., \( C E \) ?

If \( \triangle D E F \cong \angle B C A \), write the part that corresponds to: \( \begin{array}{ll}\text { (a) } \angle E & \text { (b) } \overline{E F} \\ \text { (c) } \angle F & \text { (d) } \overline{D F}\end{array} \)

128.22 से.मि. उचाइ भएको एउटा बेलनाको वृत्ताकार आधारको परिधि 132 से.मि. चि । the circumference of the circular base of a cylinder with height 22 cm is 132 cm .

Find the equation of the plane that passes through the point \( P(1,2,3) \) and has the normal vector \( \mathbf{N}=[2,-1,4] \).