Surface Area of Rectangular Prism

How to calculate surface area of basic rectangular prism with step by step illustration

1. Finding: Surface Area of Rectangular Prism - Mr Kim

2. 11cm 8cm 5cm

3. Rectangular Prism has 6 faces 11cm 8cm 5cm

4. Rectangular Prism has 6 faces 1

5. Rectangular Prism has 6 faces 2

6. Rectangular Prism has 6 faces 3

7. Rectangular Prism has 6 faces 4

8. Rectangular Prism has 6 faces 5

9. Rectangular Prism has 6 faces 6

10. We must calculate the Total Area of all 6 Faces

11. 11cm 8cm 5cm

12. Front Area is 11cm 8cm 5cm

13. Front Area is 11cm 8cm 5cm 11 x

14. Front Area is 11cm 8cm 5cm 11 x 8

15. 11cm 8cm 5cm 11 x 8 Now, the Back Area is the same as the Front so…

16. 11cm 8cm 5cm 11 x 8 x 2 Now, the Back Area is the same as the Front so times by 2

17. 11cm 8cm 5cm 11 x 8 x 2 Now we are going to find the Side Area

18. 11cm 8cm 5cm 11 x 8 x 2 Now we are going to find the Side Area

19. 11cm 8cm 5cm 11 x 8 x 2 + Make sure to add that on

20. 11cm 8cm 5cm 11 x 8 x 2 + So the Side Area is

21. 11cm 8cm 5cm 11 x 8 x 2 + 8 x So the Side Area is

22. 11cm 8cm 5cm 11 x 8 x 2 + 8 x 5 So the Side Area is

23. 11cm 8cm 5cm 11 x 8 x 2 + 8 x 5 But the other Side is the same as well so…

24. 11cm 8cm 5cm 11 x 8 x 2 + 8 x 5 x 2 But the other Side is the same as well so times by 2

25. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 5cm Now we are going to find the Top Area

26. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 5cm Now we are going to find the Top Area

27. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 5cm Make sure to add that on as well

28. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 5cm So the Top Area is

29. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 5cm If it’s 11cm there

30. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 5cm It’s 11cm there as well

31. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5cm It’s 11cm there as well

32. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5cm Times by…

33. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5cm Times by…

34. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5cm If it’s 5 cm down there

35. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5cm It’s 5 cm here as well

36. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5 5cm It’s 5 cm here as well

37. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5 5cm But the Bottom Area is the same as the Top so…

38. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5 x 2 5cm But the Bottom Area is the same as the Top so times by 2

39. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5 x 2 5cm Putting this altogether in the calculator gives…

40. 11cm 8cm 11 x 8 x 2 + 8 x 5 x 2 + 11 x 5 x 2 = 366cm² 5cm Putting this altogether in the calculator gives… Our Final Answer!