Warm-up

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## Warm-up

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**Warm-up**Find the area of the following: show calculations! 1.) 2.) 3.) 12 cm 4 inches 3 inches 3 cm 8ft 8ft**A Rectangular Prism has 6 faces**Top Back Height Left Right Front Width Length Bottom**A Rectangular Prism has 6 faces**Top Front Left Bottom Right Back**In order to find the surface area, you find the area of each**face, then add them all together. Top Width Height Front Left Height Length Width Length Bottom Width Length Right Height Back Height Length Width**In order to find the surface area, 2·(length·width)**+2·(length·height) +2·(width·height) height width length 2LW+2LH+2WH = SA of Rectangular Prism**1) Find the surface area of the Rectangular Prism**10cm 12cm 8cm**1) Find the surface area of the Rectangular Prism**Length = ? Width =? Height = ? 8 cm 12 cm 10 cm 10cm SA = 2·L·W + 2·L·H + 2·W·H =2·(8cm·12cm) + 2·(8cm·10cm) + 2·(12cm·10cm) =2·(96cm2) + 2·(80cm2) + 2·(120cm2) =192cm2+ 160cm2 + 240cm2 = 592 cm2 12cm 8cm**2) Find the surface area of the Rectangular Prism**Length = Width = Height = 10m 2m 5m 5m 2m 10m SA = 2·L·W + 2·L·H + 2·W·H =2·(10m·2m) + 2·(10m·5m) + 2·(2m·5m) =2·(20m2) + 2·(50m2) + 2·(10m2) =40m2 + 100m2 + 20m2 = 160m2