UNIT 1 3 SURFACE AREAS OF 3 D

I) REVIEW: RECTANGULAR PRISMS Prisms are 3 D objects where two opposite sides are

II) AREAS OF RECTANGULAR PRISMS A rectangular prism has six sides Opposite sides have

III) COMPOSITE SHAPES A composite shape is a combination of two or more solids

PRACTICE: DRAW ALL SIX VIEWS AND FIND THE SURFACE AREA Top Front Right Back

PRACTICE: FIND THE SURFACE AREA OF EACH SOLID: Front Back Left Right Top Bottom

HOMEWORK: P 18, 19 # 4 – 8, 10, 11 © Copyright all rights

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I) REVIEW: RECTANGULAR PRISMS Prisms are 3 D objects where two opposite sides are parallel and have the same shape Triangular Prism Pentagonal Prism Hexagonal Prism A rectangular Prism is a prism where the opposite ends are rectangles/squares © Copyright all rights reserved to Homework depot: www. bcmath. ca

II) AREAS OF RECTANGULAR PRISMS A rectangular prism has six sides Opposite sides have equal areas To find the surface area of the prism, find the sum of the top, front, and right sides, then multiply by two! Top Back Right Left Front Bottom Surface Area: © Copyright all rights reserved to Homework depot: www. bcmath. ca

III) COMPOSITE SHAPES A composite shape is a combination of two or more solids combined together Each solid has six sides. To find the surface area, find the area of all six sides Right Left Front Back Top Bottom © Copyright all rights reserved to Homework depot: www. bcmath. ca

PRACTICE: FIND THE SURFACE AREA OF EACH SOLID: Front Back Left Right Top Bottom Surface Area Another method for finding the surface However, the Front There are 7 blocks in total area is to count the total number of blocks. area should be Back 30 units 2 not 28 units 2 Left There Thenare subtract 12 sides thecovered number of sides that are This is because covered blocks Rightfrom two connecting Surface two sides are Top Area missed when Bottom Surface Area taking all six views