Save guides, add subjects and pick up where you left off with your BBC account. The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate ...

Practice circle geometry ahead of your National 5 Maths exam with this interactive maths quiz. Looking for more on circle geometry? Check out our National 5 Maths guide. National 5 Maths circle ...

THIS work of Prof. Smith's has a “very practical purpose,” viz, “to present in simple and intelligible form a body of geometric doctrine, acquaintance with which may fairly be demanded of ...