The phrase "a known area" is correct and usable in written English.
It can be used to refer to a location or field that is familiar or recognized by people.
Example: "The researchers focused their study on a known area of interest in environmental science."
Alternatives: "a familiar region" or "a recognized zone".
A known area from each micrograph was divided into 12 40 even segments and examined for surface irregularities.
It is a known area for smugglers to go in and out from," said the guide, who had spoken to an Egyptian survivor.
Pin old family photographs of a known area on to an interactive map and search for thousands of images uploaded by museums and archives.
You have to have an integrity because it is a known area that could be suspect.
After the measurement, the tephra was swept in a box from a known area and weighed.
The total amount (stock) (kg ha−1) of the active ingredients terbuthylazine, terbuthylazine-desethyl and hexazinone present in the LFH at each sampling time were calculated using the chemical concentration multiplied by the total oven dry mass of LFH over a known area.
Dr. Singer and her colleagues delved into a little known area of psychology at the trial, arguing that Ms. Hearst had helped rob a bank because she had been brainwashed to embrace the values of the Symbionese Liberation Army, which abducted her.
For forestry investors who can clearly determine their discount rate, NPV and LEV provide the best means to maximise profits, given a fixed, known area of land.
8a4807db-e1e3-48b8-b1ef-d91a26c04e85 Chevrolet has hit upon the novel idea of using a little known area of challenging forest draped with intermittent terror and tarmac called 'Nurburgring' to test the capability of its new Camaro Z/28.
The sample is determined by randomly placing a plot within the boundaries of a population of known area and collecting information about a number of attributes found within the boundary of the plot.
Subsequently, in Photoshop, a box of known area (61,802 μm) was used to enclose a group of facets, and the facets within that box were counted.
