The plates a parallel-plate capacitor are 2.50 mm apart and each carries a charge of magnitude 80.0 nC. The plates are in a vacuum. The electric field between the plates has magnitude of 4.00x106 V/m.
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Oh, dude, the area of a plate is just the amount of space it covers on a flat surface, like if you spilled your spaghetti on it. You calculate it by multiplying the length and width of the plate, but who really cares about that when there's food on it, am I right? Just make sure your plate can hold all the Pizza you're about to devour, and you're good to go!
The area of a plate will likely be found using the formula for the area of a circle. This is the product of pi*(r^2).
The area of the plate is equal to pi times the square of the radius. Since the plate has a 10 inch diameter, the radius is 5 inches. Therefore, the area is equal to pi times 25, or about 78. 5 inches.
Circumference = 28.2743339 inches. Area = 63.6172512 square inches.
The area is about 78.5 square inches. The formula for the area of a circle is A = pi r2 where r is the radius (half of the diameter) 3.1416 x (5)2 = 3.1416 x 25 = about 78.54 square inches
The answer depends on the material of the plate and the density of that material.
Use the equation for circumference: C = pi * d Plug in 10 inches for "d" => C = 3.14 * 10 inches = 31.4 inches 31.4 inches is the circumference of a dinner plate with a diameter of 10 inches. Key: C = circumference d = diameter pi = 3.14