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

Analitik düzlemde \( d_{1}: 2 x+y-12=0 \) ve \( d_{2}: x-y+6=0 \) doğruları veriliyor. 9. \( d_{1} \) ve \( d_{2} \) doğruları ile \( x \) ekseni arasında kalan alanın kaç birimkare olduğunu bulu- nuz. 10. \( d_{1} \) ve \( d_{2} \) doğruları ile eksenler arasında kalan alanın kaç birimkare olduğunu bulunuz.

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.

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

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 \( C^{\prime} \) ? - \( (47,36) \) - \( (53,24) \) - \( (47,24) \) - \( (53,36) \)

Identify the measure of each interior angle of a regular 15 - gon.