Using 3.14 as Pi the area of circle is: 200.96
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To find the area of the top surface of the can, we need to calculate the area of a circle. The formula for the area of a circle is A = πr^2, where A is the area and r is the radius. Since the diameter of the can is 8 cm, the radius is half of that, which is 4 cm. Plugging in the values, we get A = π(4 cm)^2 = 16π cm^2, which is approximately 50.27 cm^2.
When you try to figure out an area of a circle, you square the radius, then multiply it by pi to get the area of a circle. A radius square is radius x radius, or radius squared.
The area of any circle is (pi) x (radius)2 .The area of half the circle is just half of that number.
A circle with a radius of 2.5 meters has an area of 19.63 square meters.
A circle with a radius of 5 units has an area of 78.54 square units.