299. Le basi e il lato obliquo di un trapezio isoscele misurano \( 39 \mathrm{~cm}, 21 \mathrm{~cm} \) e 15 cm . Calcola la diagonale di un rettangolo equivalente al tra- pezio sapendo che ha una dimensione di 9 cm . [ 41 cm\( ] \)

A farmer buys 58 feet of fencing material to build a rectangular livestock pen. Fill in the second columi of the table to find the length of the pen if the width is \( 4,6,8,10 \), or 12 feet. Then find the area of each of the pens formed.

6. Jennifer wants to plant a flower garden in the space shown. She wants to add a fountain that is 3 feet wide and 3 feet long. What is the area of the space left to plant flowers?

6. Jennifer wants to plant a flower garden in the space shown. She wants to add a fountain that is 3 feet wide and 3 feet long. What is the area of the space left to plant flowers?

12. Mike used a coordinate plane to design the patio shown at the right. Each unit on the grid represents 1 yard. To buy materials to build the patio, Mike needs to know its perimeter. What the perimeter of the patio?

Con una escalera de \( z=36 u \) se desea subir al extremo de una barda de \( x=18 u \) de altura. ¿A qué distancia se necesita colocar la base de la escalera para que el otro extemo coincida con la punta de la torre?