Download presentation

Presentation is loading. Please wait.

Published byBenjamin Jensen Modified over 4 years ago

1
Circles Yes I know we did this yesterday

2
Circumference Posh name for the perimeter of a circle Measured in normal units of length cm etc. But how do I work it out?

3
Glad you asked. First we need to remember the basics Radius pl. radii diameter

4
Get to the point. Circumference = 2πr (r = radius) = πd (d = diameter) π (pi) = 3.1416……… (goes on forever) Yes just like someone else

5
One for you to try C = 2 x π x r = 2 x π x 6 = 12 π = 37.7cm (to 1 d.p.) 6cm

6
So what about area? Measured in square units Area = πr 2 (π x radius x radius)

7
Example Area = π x 5 2 = 25π = 78.5 cm 2 (to 1 d.p.) 5cm

Similar presentations

OK

Introduction & Installation. Circles A circle is a shape with all points the same distance from the center. A circle is named by the center. The circle.

Introduction & Installation. Circles A circle is a shape with all points the same distance from the center. A circle is named by the center. The circle.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on artificial intelligence download Ppt on chromosomes and genes and dna Ppt on inhabiting other planets in our solar Ppt on central ac plant Ppt on negative list under service tax Ppt on total hip replacement Ppt on question tags esl Ppt on electricity for class 10th date Ppt on cross site scripting error Ppt on pricing policy samples