Find the area of the shaded ...
Find the area of the shaded octagon (A=?, a=1999) and express result to the accuracy of 3 decimal.Correct answers: 22
The first user who solved this task is Allen Wager.
#brainteasers #math #riddles
First Latimer patentIn 1874, Lewis H. Latimer received his first U.S. patent (No. 147,363). This one was for his invention of a water-closed for railroad cars, but he is better known for his patents for improvement in incandescent electric lamps.« |