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answer 256 feet. 550 Ascending bodies are retarded in the same ratio that T descending bodies are accelerated; therefore, if a ball, discharged from a gun, returned to the earth in 12 seconds; how high did it ascend

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a nswer 576 feet. The space through which a body has fallen given, to find

the time it has been falling. Rule 1. Four times the number of seconds in which the

body has been falling will be equal to the square root of

the space, in feet, through which it has fallen: Therefore, 2. Divide the square-root of the space fallen through by 4,

and the quotient will be the time in which it was falling.

51 In what time will a musket ball, dropped from the top of a steeple 484 feet high, come to the ground ?

answer 55 seconds. 52 If a cubical piece of timber be 47 inches long, 47 inches broad, and 47 inches deep, how many cubical inches doth it contain ?

answer 103823 53 There is a cellar dug that is 12 feet every way, in length, breadth, and depth, how many solid feet of earth were taken out of it?

answer 1728 54 What is the price of a marble slab, whose length is 5 feet 7 inches, and breadth 1 foot 10 inches, at 1 dollar per foot

to answer 10 dols. 23 cents. 55 If a house measures within the walls 52 feet 8 inches in length, and 30 feet 6 inches in breadth, and the roof be of a true pitch, or the rafters of the breadth of the building, what will it come to roofing at 1,75cts. per square?

answer 42,16 56. What will 931 yards of shalloon come to, at 55cts. Ams. per yard?

answer 515 dols. 77cts. 4ms.

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