Note: Figure is not drawn to scale. If p = 8 cm, r = 3 cm, and s = 4 cm, and the bases of the figure are the shaded regions, what is the lateral surface area of the geometric shape formed by this net?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)