How do you find surface area using diameter?
How do you find surface area using diameter?
The formula for the area A as a function of the diameter d of a circle is given by A = π (d/2)^2.
How do you calculate the surface area of the Sun?
The sun has a radius of 695 x 106 m 4 giving a surface area of 6.07 x 1018 m2. Thus the total power output of the sun is 64 x 10 times 6.09 x 1018 m2, which is equal to 3.9 x 1026 watts.
How many Earths would fit across the diameter of the Sun?
110 Earths
The Sun is much bigger than the Earth; about 110 Earths could fit across the Sun.
What is surface area of a circle?
The area of a circle is pi times the radius squared (A = π r²). Learn how to use this formula to find the area of a circle when given the diameter.
What is the surface level of the Sun?
the photosphere
This level is what we see as the glowing “surface” of the Sun – the photosphere. The temperature of the photosphere is around 5,500° C (about 9,900° F). The photosphere is much cooler than the Sun’s core, which has a temperature well above 10 million degrees.
What is the equation of the Sun?
The precise definition of the Equation of Time is E = GHA (apparent Sun) – GHA (mean Sun) (1) where GHA is the Greenwich hour angle. An alternative formula often quoted in text books is E = right ascension of the fictitious mean Sun – right ascension of the apparent (actual) Sun.
What is the diameter of sun?
865,370 miSun / Diameter
What is the sun scale diameter?
Radius, diameter & circumference Its equatorial diameter and its polar diameter differ by only 6.2 miles (10 km). The mean radius of the sun is 432,450 miles (696,000 kilometers), which makes its diameter about 864,938 miles (1.392 million km).
What is the surface area and diameter of a circle?
The surface area of circle is 4πr 2 . The diameter is the distance across two extreme ends of a circle passing through the center.
How do you find the radius and area of a circle?
Diameter of the circle “d” = 2 cm. Hence, its radius “r” = d ÷ 2 = 2 ÷ 2 = 1 cm. Now find the area of the circle using the formula with radius as shown below; Area A = pi x radius x radius . A = 3.14 x 1 x 1. A = 3.14 x 1 = 3.14 sq.cm . Notice that the calculated area of the circle is same in both the methods.
Why is the area of a circle important in math?
The circle’s area found with both the radius and diameter calculators serves as a base for many other equations – not only in mathematics but also in everyday life! Here are a few examples where knowing how to find the area of a circle might be useful:
How do you calculate the area of a circular home?
Plug in the radius into our formula: To convert square meters, m2 m 2, to square kilometers, km2 k m 2, divide by 1,000,000 1,000,000: Sun City’s westernmost circular housing development has an area of nearly 1 square kilometer! Try these area calculations for four different circles.
