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Notes Over 10 - 5

h. w. l. Notes Over 10 - 5. Surface Area. l h. l w. h w. h w. l h. l w. Notes Over 10 - 5. Surface Area. r. Area of circle = p r 2. Area of circle = p r 2.

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Notes Over 10 - 5

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  1. h w l Notes Over 10 - 5 Surface Area l h l w h w h w l h l w

  2. Notes Over 10 - 5 Surface Area

  3. r Area of circle = p r2 Area of circle = p r2 Area of rectangle = l x w where the length is the circumference of the circle and the width is the height. A = d p h or 2prh . . Notes Over 10 - 5 Surface Area h SA = 2prh + 2pr2

  4. 1. 1 cm 12 cm 5 cm Notes Over 10 - 5 Surface Area Find the surface area of the following figures. 5 1 5 12 1 12 5 60 12 77

  5. 2. 3 yd 5 yd Notes Over 10 - 5 Surface Area Find the surface area of the following figures. SA = 2prh + 2pr2 SA = 2p( )( ) + 2p( )2 5 3 5 SA = ( )( ) + ( )( ) 30 3.14 50 3.14 SA = + 94.2 157 = 251.2 yd 2

  6. The two right triangles will form a rectangle 3. 5 ft 8 ft 3 3 ft 4 4 ft Notes Over 10 - 5 Surface Area Find the surface area of the following figures. R2 = 5 ( 8 ) = 40 R1 = 3 ( 8 ) = 24 R3 = 4 ( 8 ) = 32 = 108 ft2 SA = + + + 12 24 40 32

  7. Pg 530 10 – 5 #1 – 7, 8 – 19 For the space figure represented by each net, find the surface area to the nearest square unit. 7 m 1. 7 m 7 m 49 245 245 7 m 539 7 m 35 m 7 7 7 35 7 35

  8. Pg 530 10 – 5 #1 – 7, 8 – 19 For the space figure represented by each net, find the surface area to the nearest square unit. 2. 12 yd 10 yd 37.7 yd SA = lw + 2pr2 SA = ( )( ) + 2p( )2 10 37.7 6 SA = ( ) + ( )( ) 377 72 3.14 SA = + 377 226 = 603 yd 2

  9. Pg 530 10 – 5 #1 – 7, 8 – 19 For the space figure represented by each net, find the surface area to the nearest square unit. 6 m 3. 9 m 6 m 54 180 270 9 m 504 6 m 30 m 6 9 6 30 9 30

  10. Pg 530 10 – 5 #1 – 7, 8 – 19 Find the surface area for each space figure. If the answer is not a whole number round to the nearest tenth. 4. 4.8 m 4.6 m SA = 2prh + 2pr2 SA = 2p( )( ) + 2p( )2 2.4 4.6 2.4 SA = ( )( ) + ( )( ) 22.08 3.14 11.52 3.14 SA = + 69.3312 36.1728 = 105.5 m 2

  11. Pg 530 10 – 5 #1 – 7, 8 – 19 Find the surface area for each space figure. If the answer is not a whole number round to the nearest tenth. 5. 144 192 192 16 mm 528 12 mm 12 12 12 16 12 16

  12. Pg 530 10 – 5 #1 – 7, 8 – 19 The two right triangles will form a rectangle 6. 5 in 7 in 3 3 in 4 4 in Find the surface area for each space figure. If the answer is not a whole number round to the nearest tenth. R2 = 5 ( 7 ) = 35 R1 = 3 ( 7 ) = 21 R3 = 4 ( 7 ) = 28 = 96 in2 SA = + + + 12 21 35 28

  13. Pg 530 10 – 5 #1 – 7, 8 – 19 7. The base of a rectangular prism is 3 in. by 5 in., and the height is 11 in. Draw and label a net for the prism. Find its surface area. 15 55 33 103 11 in 3 in 5 in 3 in 5 in 5 3 5 11 3 11

  14. Pg 530 10 – 5 #1 – 7, 8 – 19

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