Download presentation

Published byStephanie Malone Modified over 4 years ago

1
**Level 7 Surface Area - Cuboid and Cylinder 28-Mar-17**

Objective Calculate the surface of a cuboids and cylinders A cylinder is just a name for a tube shape A cuboid is just a name for a box shape Level 7 © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

2
**a b Starter – Remembering the formulae (rules) and things**

The formula for the perimeter of a rectangle is: L + H + L + H L x H x L x H L x W ÷ 2 H a b L 2. The formula for the area of a rectangle is: L + H L x H L x W ÷ 2 H L © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

3
**Π 3. b 4. c Starter – Remembering the formulae (rules) and things**

3. The Greek letter pi Π is approximately: 3.41 3.14 34.1 Π 3. b 4. c 4. The name for the perimeter of a circle is: Radius Diameter Circumference © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

4
**5. a 6. c Starter – Remembering the formulae (rules) and things**

5. The radius of a circle is: The distance from the centre to the edge The distance across a passing through the centre The distance all the way 5. a 6. c 6. The diameter of a circle is: Half of the radius Half the circumference Twice as big as the radius © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

5
**7. c 8. b Starter – Remembering the formulae (rules) and things**

7. The formula for the circumference of a circle is: Πr2 Πr Πd 7. c 8. b 8. The formula for the area of a circle is: a) 2Πr b) Πr2 c) Πd © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

6
**9. a 10. c Starter – Remembering the formulae (rules) and things**

9. Πr2 means: Π x r x r Π x r x 2 Πx Π x r 9. a 10. c 10. The formula for the area of a triangle is: a) Base x Height b) Base + Height c) Base x Height ÷ 2 © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

7
**11. b 12. c Starter – Remembering the formulae (rules) and things**

11. The little number 2 on area measures (4 cm2) means that: The answers is times 2 The units are square cm. The units are doubled 11. b 12. c 12. The area of a shape is a way of measuring its: a) Base b) Volume c) Surface © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

8
**Finding the surface area of a box**

The surface area of a box is the total of all the rectangles that are its sides, top and bottom. © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

9
**Front Back and Sides A = 10 x 14 A = 140 cm2 Top 4 + 3 + 4 + 3 = 14**

A = H x L Perimeter = L+H+L+H Top A = 3 x 4 A = 12 cm2 4 = 14 3 Front Side Back Side Front Back and Sides A = 10 x 14 A = 140 cm2 10 Bottom A = 3 x 4 A = 12 cm2 Surface Area = 164 cm2 Bottom © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

10
**Top 5 + 4 + 5 + 4 = 18 Front Side Back Side Front Back and Sides**

A = H x L Perimeter = L+H+L+H Top A = 5 x 4 A = 20 cm2 5 = 18 4 Front Side Back Side Front Back and Sides A = 10 x 18 A = 180 cm2 10 Surface Area = 220 cm2 Bottom A = 5 x 4 A = 20 cm2 Bottom © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

11
**Front Back and Sides = 140 cm2 Surface Area = 160 cm2**

= 132 cm2 Top and Bottom = 20 cm2 Front Back and Sides = 140 cm2 Surface Area = 160 cm2 © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

12
**Label TOP πd 3.14 x 10 = 31.4 5 A = 12 x 314 A = 376.8 cm2 12**

A = Πr2 A = 3.14 x 52 A = 78.5 cm2 Area Circle = πr2 Circumference = πd d = 2r pi π = 3.14 (to 2 d.p.) πd 3.14 x 10 = 31.4 5 Label A = 12 x 314 A = cm2 12 The surface area is: A = 2x A = cm2 Bottom A = Πr2 A = 3.14 x 52 A = 78.5 cm2 BOTTOM © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

13
**Label TOP πd 3.14 x 16 = 50.24 8 A = 15 x 50.24 A = 753.6cm2 15**

A = πr2 A = 3.14 x 82 A = cm2 Area Circle = πr2 Circumference = πd d = 2r pi π = 3.14 (to 2 d.p.) πd 3.14 x 16 = 50.24 8 Label A = 15 x 50.24 A = cm2 15 The surface area is: A = 2x A = cm2 Bottom A = πr2 A = 3.14 x 82 A = cm2 BOTTOM © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

14
**Radius = 3 Length = 10 SA = 244.9 Radius = 6 Radius = 10 Height = 10**

© Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

15
**Radius = 5 cm Height = 4 cm 10 2 900 6 8 10 cm 3 cm 4 cm**

Make a poster showing how to find the surface area of these three shapes 900 6 8 © Brain-Cells: E.Resources Ltd. All Rights Reserved 24/11/09

Similar presentations

OK

© 2008 Pearson Addison-Wesley. All rights reserved 9-3-1 Chapter 1 Section 9-3 Perimeter, Area, and Circumference.

© 2008 Pearson Addison-Wesley. All rights reserved 9-3-1 Chapter 1 Section 9-3 Perimeter, Area, and Circumference.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google