Week 3 Term 3

Bonjour;

It's week three of term three! This week we finally went out onto the streets for Cross Country. The way we go on the streets is we go round the school like we would usually, then we cross over to Sherwyn Park and once we get past the shed, we turn onto Raikes Ave. Then we run straight until the end of the road, where we turn left and run up a steep, long hill. Then we run straight before turning left onto the Matariki downhill. At the bottom of the hill, we turn left again into a small alleyway, that some people tend to miss. Then we head back onto Raikes Ave and at the end, we go at a diagonal right across and up and footpath ed hill then we run straight over to the Fladgates' Village and then we turn in to another small alleyway onto Sherwyn again, then we run down to the shed and in a diagonal over to a small hill, then we run all the way down the side of Sherywn and cross over the pedestrian crossing back into school grounds. Then we run down to the offices, and that is one whole lap; 3 KMs. WIMS cross country (I am not involved in that) is Week 4 Tuesday, and two people from my class are in it. Then in Week 4 on Friday is Inter House cross country, which everyone does. This track covers farm land a with lots of steep hills, and I think it is just 3 KMs, but it is hard with all the hills. We start in age groups, separately.  I think Year 8 girls go first, then Year eight boys. After that is Year 7 girls, and then after them is Year 7 boys. 

This week I learnt about Pi. Pi in numbers is actually 3.141592653589793238462643383279502884197169399375105820974944592307816406286 ...And a lot more numbers, but the abbreviated version is just two decimal places: 3.14. You use Pi for finding circumference of circles in Maths. 

So, the diameter is 10 cm. What you do is you multiply the diameter (10 cm) by Pi (3.14) to find the circumference of a circle that has a 10 cm diameter. The answer of that would be 31.4 cm.

Pi can also be use to find the area of circles.
If we use the same example of a circle with 10 cm, this is how you do it:

First you need to divide the diameter by two, to make the radius. You need the radius because for finding area it is by radius, not diameter. So now the circle will look like this:

Because we now have the radius. So what we do is we multiply the radius by Pi (3.14). The answer for this would be 15.7, the area of the circle.

Au Revoir.