Find the area of the shaded ...
[3087] 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. - #brainteasers #math #riddles - Correct Answers: 22 - The first user who solved this task is Allen Wager
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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
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Knock Knock Collection 026

Knock Knock
Who's there?
Bitter Bianca!
Bitter Bianca who?
Bitter Bianca next train out of here, pardner!
Knock Knock
Who's there?
Bjorn!
Bjorn who?
Bjorn Free!
Knock Knock
Who's there?
Bo!
Bo who?
Bo Geste!
Knock Knock
Who's there?
Bolivia!
Boliva who?
Boliva me, I know what I'm talking about!
Knock Knock
Who's there?
Bologna!
Bologna who?
Bologna & cheese!
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Abraham (Pineo) Gesner

Died 29 Apr 1864 at age 66 (born 2 May 1797).Canadian chemist and geologist who pioneered the extraction of kerosene (which he named) by the dry distillation of asphalt rock. He realized the usefulness of this liquid (known as paraffin in England) as a cleaner-furning fuel in lamps to replace whale oil. He obtained several patents for his processes he invented. U.S. Patent Nos. 11,203-5 (issued 27 Jun 1854) described his process for obtaining kerosene from asphalt rock by heat distillation. His Patent No.12,612 (27 Mar 1855) was the first in the U.S. for a process to obtain oil for illumination from bituminous shale and cannel coal. He also invented a wood preservative, an asphalt highway paving process, compressed coal dust briquettes, and a machine for insulating electric wire.«
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