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.

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.

43. What is the difference between the total surface area and curved surface area of a cylinder whose radius is equal to 10 cm ? \( \begin{array}{ll}\text { (a) } 200 \pi \mathrm{~cm}^{2} & \text { (b) } 300 \pi \mathrm{~cm}^{2} \\ \text { (c) } 100 \pi \mathrm{~cm}^{2} & \text { (d) } 10 \pi \mathrm{~cm}^{2}\end{array} \)

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

61. A fountain pen with a cylindrical barrel of diameter 2 cm and height 10.5 cm , filled with ink, can write 3300 words. How many words can be written with that pen using 100 ml of ink? (Take \( 1 \mathrm{cc}=1 \mathrm{ml} \) ) \( \begin{array}{ll}\text { (a) } 40,000 & \text { (b) } 30,000\end{array} \)

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.