A PROBLEM FOR PLUMBERS.
[74.] A requires a tank in size capable of holding the quantity of water that would be caught from the roof of his house in a fall of 3 inches of rain. The roof (commonly called a “hip-roof”) is at an angle of 45 degrees to the wall plates. The length of house is 30 ft., breadth 24 ft., and length of ridge to roof 6 ft. But the eaves of the iron used for the roofing were so large as to increase its (the roof’s) dimensions by 3 inches all round, and the spouting added another 3 inches all round. Find the number of gallons the tank would require to contain; also dimensions of tank to be made so that its height must exceed its diameter by no more than 12 inches?
“The ’embers of a dying year”—November, December.
TO TELL THE COMPASS BY A WATCH.
Hold the watch face-downwards above your head with the hour hand pointing towards the sun, and half-way between the hour hand and the figure XII will be the North.
[75.] Divide 100 into two parts, so that a quarter of one exceeds one-third of the other by 11.