In the figure on the right, assume that the distance between adjacent dots in a row or column is 1 unit. Determine the area of the figure.

b) Triangle C is equilateral and has side length \( x \mathrm{~cm} \). The ratio of the perimeter of rectangle A to the perimeter of triangle C is \( 5: 4 \). Work out the value of \( x \).

Example 5 : (Applications) A ball is thrown 6.4 m into the air. The ball falls, rebounds to \( 60 \% \) of its previous height, and falls again. If the ball continues to rebound and fall in this manner, fin the total distance the ball travels until it hits the ground for the fifth time.

16 Un terreno mide 180 m de largo por 160 m de ancho. El agricultor decide dividirlo en parcelas cuadradas iguales del máximo tamaño posible. a. ¿Cuánto medirán los lados de cada parcela? b. ¿Cuántas parcelas quedarán?

ostruiscitre segmentiadiacentie allineati sul- a stessa retta in modo che \( A B<C D<E F, B \equiv C e \) \( D \equiv E \). Trova il punto medio del segmento som- ma \( A F \).

construct a \( \triangle A B C \) such that : \( A B=6 \mathrm{~cm}, B C=4 \mathrm{~cm} \) and \( C A=5.5 \mathrm{~cm} \)