Question

A container opened from the top is in the shape of a frustum of a cone of height 16cm with the radii of tis lower and upper ends are 8cm and 20cm respectively. find the cost of the milk which can completely fill the container at the rate of Rs.20 per litre.​

Answer 1

Step-by-step explanation:

$\large{\red{\underline{\tt{Diagram\::-}}}}$

$\setlength{\unitlength}{1.5cm}\begin{picture}(10,10) \thicklines \put(0,0){\line(1,0){2}}\put(0,0){\line(0,1){2}}\put(2,0){\line(0,1){4}}\put(0,2){\line(1,0){2}}\put(0,2){\line(1,-1){2}}\put(0,2){\line(1,1){2}}\put(-0.2,-0.2){ A }\put(2,-0.2){ B }\put(2.2,2){ C }\put(2.2,4){ D }\put(-0.2,2){ E }\put(-0.6,1){ 60\;m }\put(0.5,1.6){ 30^{\circ} }\put(1.38,0.15){ 50^{\circ} }\put(0.4,2.1){ 70^{\circ} }\qbezier(0.2,2.2)(0.3,2.1)(0.21,2)\qbezier(0.3,2)(0.27,1.9)(0.2,1.78)\put(2.3,3){ x }\end{picture}$