A line segment has an endpoint at \( ( - 7,11 ) \) . If the midpoint of the line segment is \( ( - 6,4 ) \) , what are the coordinates of the other endpoint? A \( ( - 6.5,3.5 ) \) B \( ( - 1 , - 7 ) \) C \( ( - 5 , - 3 ) \) D \( ( - 13,15 ) \) 

A rectangular prism has dimensions of length 5 meters, width 3 meters, and height 2 meters. Calculate the volume of the prism.

[b] A sphere, its volume is \( 36 \pi \mathrm{~cm}^{3} \). Calculate its area.

5.3. A diameter and a chord, which is equal to the radius, are passed from the given point of the circle. Find the angle between them.

5.4. Two chords equal to the radius are drawn from a given point of the circle. Find the angle between them.

A cone has a radius of 4 cm and a height of 9 cm. What is the relationship between the volume of this cone and a cylinder with the same radius and height?