4.3 Surface Area
4.3 Surface Area
4.3 Surface Area
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<strong>4.3</strong> <strong>Surface</strong> <strong>Area</strong>??sslant height (s) = 481 + 377.5= 611.4 ft4 triangles = 923214 ft of limestone
AREA Formulas...Rectangle or SquareCircleTriangleA = bhrA = π r 2hA = ½ bhbParallelogram or RhombusTrapezoidahA = bhhA = ½ h(a + b)bb<strong>Surface</strong> <strong>Area</strong><strong>Surface</strong> area is the total area of all of the facesof the object.Steps need to find <strong>Surface</strong> area are:1. Draw all of the faces with dimensions displayed on them.2. Find the area of each face.3. Then add up the areas of all of the faces.
Activate Prior Learning:<strong>Surface</strong> <strong>Area</strong>s of Right Prismsand CylindersSA = 2wl + 2hl + 2hwSA = 2πr 2 + 2πrhWhich object below has the greater surface area?Ûü(Erase to reveal)
ü(Erase to reveal)Worksheet on Prisms & Pyramids
AttachmentsWorksheet <strong>Surface</strong> <strong>Area</strong> of Prisms and Cylinders.pdfWorksheet <strong>Surface</strong> <strong>Area</strong> of Pyramids and Cones.pdfSA Prisms and Pyramids.pdf
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