Find the area of the shaded figure
Express result to the accuracy of 3 decimal.Correct answers: 51
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
VaselineIn 1872, a process for making vaseline was patented by Robert Chesebrough of New York City (U.S. No. 127,568). He was an English-born chemist who emigrated to the U.S., and had worked in the oil-fields of Pennsylvania. The vaseline is a product from petroleum, made from the residue of petroleum distillation left in the still after all oil has been vaporized. Distillation by heat under vacuum involves less heating than without the vacuum, and yields a better quality of vaseline. It is then filtered through bone-black. the patents claims its uses include currying, stuffing and oiling all kinds of leather. The finest grade of vaseline is also adapted to use as a pomade for the hair. It is also an excellent substance for glycerine cream for chapped hands. |