It's about three-fifths as big as a Dime
It's about half as big as a Penny
In other words, 38 nanoacres is 0.54 times the size of a Penny, and the size of a Penny is 1.85 times that amount.(United States one-cent coin) (a.k.a. Lincoln penny, a.k.a. Cent, a.k.a. One cent piece)
The Lincoln penny, in its current design since 1909, has a diameter of 19.05 mm (0.75 in) and an area of 70.40 nanoacres.
It's about twice as big as a Nailhead
In other words, 38 nanoacres is 1.978 times the size of a Nailhead, and the size of a Nailhead is 0.5056 times that amount.(for 11-gauge wire nai)
An 11-gauge nailhead measures 19.210 nanoacres. Nails have been used since ancient times; archaeologists have discovered Ancient Egyptian nails that are over 5,000 years old.
It's about two-fifths as big as a Nickel
It's about two-fifths as big as a Postage Stamp
In other words, 38 nanoacres is 0.4 times the size of a Postage Stamp, and the size of a Postage Stamp is 3 times that amount.(average; United States dimensions)
A typical postage stamp measures an average of 100 nanoacres. One of the most prized stamps among collectors is the US-issued "Inverted Jenny" stamp printed in 1918, which features an upside-down image of Curtiss JN-4 ("Jenny") airplane; a single stamp sold for $977,500 at a 2007 auction.
It's about one-third as big as a Quarter
In other words, 38 nanoacres is 0.3327 times the size of a Quarter, and the size of a Quarter is 3.01 times that amount.(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. Washington quarter, a.k.a. two bits)
The George Washington quarter, in circulation in various forms since 1932, has a diameter of 24.26 mm (0.955 in) and an area of 114.20 nanoacres.
It's about one-fifth as big as a Secure Digital (SD) card
In other words, 38 nanoacres is 0.2 times the size of a Secure Digital (SD) card, and the size of a Secure Digital (SD) card is 5 times that amount.A Secure Digital (SD) card measures 3.2 cm by 2.4 cm for a total area of 190 nanoacres. SDXC Cards, the latest standard for the technology, will allow the cards to hold up to 2 terabytes of data.