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10.16 cm = 1.016 dm – 1 hand used in measuring height of horses (4 inches) 12 cm = 1.2 dm – diameter of a compact disc (CD) (= 120 mm) 15 cm = 1.5 dm – length of a Bic pen with cap on; 22 cm = 2.2 dm – diameter of a typical association football (soccer ball) 30 cm = 3 dm – typical school-use ruler length (= 300 mm)
[7] [8] This copper bar was discovered in Nippur, on the banks of the Euphrates, and is kept in the Istanbul Archaeological Museum. Archaeologists consider that this 51.85 centimetres long unit was the origin of the Roman foot. Indeed, the Egyptians divided the Sumerian cubit into 28 fingers and 16 of these fingers gave a Roman foot of 29.633 ...
1 mega square meter M(m 2) 1 square kilometre (km 2) 1.76 km 2: New Century Global Center, Chengdu, China (largest building by total floor area) 2 km 2: Monaco (country ranked 192nd by area) [49] 2.59 km 2: 1 square mile [50] 2.9 km 2: City of London (not all of modern London) [51] 10 7 59.5 km 2: Manhattan Island (land area) [52] 61 km 2: San ...
The impact crater is more than 5 miles (8 kilometers) deep. Scientists hope that returning samples to Earth will help answer enduring questions about the intriguing far side, which hasn’t been ...
Square miles should not be confused with miles square, a square region with each side having a length of the value given. For example, a region which is 20 miles square (20 miles × 20 miles) has an area of 400 sq mi; a rectangle of measuring 10 miles × 40 miles also has an area of 400 sq mi, but is not 20 miles square.
Although most contemporary accounts used an Arabic mile of 6 444 feet (1,964 metres), which gave a Spanish league of the degree of 25,776 feet (7,857 metres or 4.242 modern nautical miles) others defined an Arabic mile as just 6,000 feet making a Spanish league of the degree 24,000 feet (or 7,315 metres, almost exactly 3.95 modern nautical ...
"At most, we controlled about 1,376 square kilometres (531 square miles), now of course this territory is smaller. The enemy is increasing its counterattacks," the source said.
Earth radius (denoted as R 🜨 or R E) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius ranges from a maximum (equatorial radius, denoted a) of nearly 6,378 km (3,963 mi) to a minimum (polar radius, denoted b) of nearly 6,357 km (3,950 mi).