# How is the circumference of the sun calculated?

Please see below.

For calculating the circumference of sun, what you need is diameter of the sun.

The easiest way to measure diameter is to use a pinhole camera. But, for this you need a very small hole in, say, a card. This is not easy, but what you can do is to make a bigger whole say

Now a paste a metal film covering it completely. You can use a aluminium foil for this. Now create a very tiny hole in it and place it in sun to form an image as shown below.

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The circumference of the Sun can be calculated using its diameter and the mathematical formula for the circumference of a circle, which is C = π * d, where C is the circumference and d is the diameter. The diameter of the Sun is approximately 1.4 million kilometers, so using the formula, the circumference can be calculated as follows:

C = π * 1.4 million kilometers

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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