1. In a circle with centre \( O \) and radius \( 5 \mathrm{~cm}, A B \) is a chord of length 8 cm . If \( O M \perp A B \), what 2. In a length of \( O M \) ? in the length of centre \( O \) and radius \( 13 \mathrm{~cm}, A B \) is a chord. If \( O M \perp A B \) and \( O M=5 \mathrm{~cm} \), wh 3. In a circle of radius 7 cm , find the distance of a chord of length 9 cm from the centre. 4. In a circle of radius 13 cm , a chord is drawn at a distance 12 cm from the centre. Find th length of the chord. 5. A chord of a circle is 6 cm in length and its distance from the centre is 4 cm . Find the radius of the same circle.

9. En osto mapa. Ia carretera que va de la localidad de la Esperanza al Puerto de Veracruz encuentra remarcada y mide 6 centlmetros. La escala a la que está hecho el mapa es 1.28 . ¿ es la medida real de esa carretera?

Point \( C \) with coordinates \( (50,30) \) is mapped onto \( C^{\prime} \) through a translation by vector \( \langle-3,6\rangle \). What are the coordinates of \( C^{\prime} \) ? - \( (47,36) \) - \( (53,24) \) - \( (47,24) \) - \( (53,36) \)

Calcular las medidas de las diagonales de un paralelogramo sabiendo que sus lados desiguale miden 21 cm y 17 cm y uno de sus angulos interiores tienen una amplitud de 36 grados

cylindrical tank of diameter 28 m and height 2 m contains water to the dept Calculate: i) The capacity of the tank in litres. ii) The volume of water required to fill the tank in litres. Water was pumped into the tank starting at \( 11.25 \mathrm{a} . \mathrm{m} \). to 1.15 pm . when calculate the rate at which water was pumped into the tank. i) A rectangular tank has a base measuring has a base measuring 2.4 m bj the capacity of the tank is 6480 litres, find the height of the tank in metre ii) The above tank was initially \( 1 / 4 \) full of water

إذا كان هرم بقيمة ارتفاع 10 سم وقاعدة مربعة طول ضلعها 4 سم، بينما يكون هناك منشور له نفس القاعدة وارتفاعه 15 سم. احسب الفرق في الحجم بين الهرم والمنشور.