Find the total surface of a hollow cylinder open at and save the length is 12 cm and external diameters is 10 centimetre and thickness is 2 centimetre

Find the equation of the lines which pass through the point (4,5) and make equal angles with the lines 5x-12y+6=0 and 3x-4y-7=0

y ln⁡y d_x + (x-ln⁡y) d_y = 0

Find fof(x) of given f: x^2-3x 2. Please give detailed stepwise solution.

What length of tarpaulin 3m wide will be required to make conical tent of height 8m