Download presentation

Presentation is loading. Please wait.

Published byJohnny Hern Modified over 3 years ago

1
1 Circle Formulae 2 The area of a circle Tandi Clausen-May Click the mouse

2
2 Click the mouse only when you see or If you click too soon you will miss the best bits. Click the mouse Click to see Click the mouse

3
3 The area of a circle Tandi Clausen-May Click the mouse

4
4 We saw in Circle Formulae 1 that… Circumference = × Diameter Now, what about the area?

5
5 Imagine a circle made out of strands of beads. Open it out. Click the mouse Click to see the circle open

6
6 circumference radius (half the diameter) Let’s watch that again. It’s a triangle! base = circumference Click to see the circle open again height = radius (half the diameter) Click the mouse

7
7 circumference radius (half the diameter) = Circumference × Radius 2 Area of the triangle circle Area of the triangle We know how to find the area of a triangle. Click the mouse = Base × Height 2

8
8 = Circumference × Radius 2 Area Summary Click the mouse

9
9 The End Tandi Clausen-May

Similar presentations

OK

1 of 84 SHAPE AND SPACE Circles. 2 of 84 The circumference of a circle Use π = 3.14 to find the circumference of this circle. C = πd 8 cm = 3.14 × 8 =

1 of 84 SHAPE AND SPACE Circles. 2 of 84 The circumference of a circle Use π = 3.14 to find the circumference of this circle. C = πd 8 cm = 3.14 × 8 =

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Download ppt on community planning for disaster management Ppt on event handling in java Ppt on domestic robots Ppt on conceptual art books Ppt on game theory definition Sense organs anatomy and physiology ppt on cells Ppt on uninterruptible power supply Ppt on job rotation advantages Ppt on store design Ppt on waves tides and ocean currents definition