Mathematics
A cylindrical vessel of diameter 14 cm and height 42 cm is fixed symmetrically inside a similar vessel of radius 8 cm and height 42 cm. The total space between the two vessels is filled with glass-wool for heat insulation. Find the volume of the glass-wool required.
Related Questions
If x + 5 is the mean proportion of x + 2 and x + 9, find the value of x.
Prove that :
tan A + cot A = sec A. cosec A.
In square ABCD, the vertex A = (2, 8) and vertex C = (8, 3). Find the equation of the diagonal BD.
Use graph paper for this question. Take 1 cm = 1 unit on both x and y axis.
(i) Plot the following points on your graph sheets :
A(-4, 0), B(-3, 2), C(0, 4), D(4, 1) and E(7, 3).
(ii) Reflect the points B, C, D and E on the x-axis and name them as B', C', D' and E' respectively.
(iii) Join the points A, B, C, D, E, E', D', C', B' and A in order.
(iv) Name the closed figure formed.