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A pizza has a radius of 12cm. Calculate the area of the pizza in cm² , giving your answer as a multiple of π.

So for this question you would need to know the formula for the area of a circle. This is Area = πr^2. In this formula, r = the radius. We are given the radius in the question. So all we need to do is put ou...
JH
Answered by Jess H. • Maths tutor
7665 Views

Using Fermat's Principle explain why it makes sense for light be refracted when crossing from one medium into another that has a different refractive index.

Fermat's Principle states that light will always take the path of least travel TIME (NOT DISTANCE), at a first glance it appears that the path of least time would be a straight line from A to B, but this isn...
SH
Answered by Sam H. • Physics tutor
3977 Views

What is meant by 'intertextuality'?

A key part of A-level English Literature is understanding the context of texts. We should note that when we are reading something, what we are reading is very often inseparable from a network of ideas and in...
AS
7539 Views

How do you write an essay on a character without just being descriptive?

I think there are two key points to this answer. Firstly, that though a question may just say 'discuss character X', what its really asking is 'how does character X develop' - its very rare to find a totally...
TD
7537 Views

Is there a serious threat to the unity of the UK?

Successful arguments would include the following structure and details: How close the Scottish referendum was, whether a second one is imminent, satisfaction with current level of devolution, lack of real ch...
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Answered by Max Y. • Politics tutor
2985 Views