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CHAPTER Surface Area - School District #35

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Name: _____________________________________________________<br />

Date: ______________<br />

5.3 <strong>Surface</strong> <strong>Area</strong> of a Prism, pages 246–254<br />

12. Calculate the surface area of the rectangular prism.<br />

Draw and label the dimensions for each view.<br />

net of rectangular prism<br />

10 mm<br />

top or bottom front or back ends<br />

27 mm<br />

42 mm<br />

Find the area of each view:<br />

<strong>Area</strong> of top and bottom<br />

= 2 ×<br />

=<br />

<strong>Area</strong> of front and back<br />

= 2 ×<br />

=<br />

<strong>Area</strong> of 2 ends<br />

= 2 ×<br />

=<br />

<strong>Surface</strong> <strong>Area</strong> = (area of top and bottom) + (area of front and back) + (area of ends)<br />

= + +<br />

=<br />

13. Find the surface area of the triangular prism.<br />

6 cm<br />

8.5 cm<br />

Label the dimensions for each view.<br />

2 cm<br />

6 cm<br />

triangle (2) small rectangle (2) large rectangle<br />

cm<br />

6 cm<br />

8.5 cm<br />

cm<br />

cm<br />

cm<br />

<strong>Area</strong> of triangle: <strong>Area</strong> of small rectangle: <strong>Area</strong> of large rectangle:<br />

S.A. = (2 × area of triangle) + (2 × area of small rectangle) + (area of large rectangle)<br />

= (2 × ) + (2 × ) +<br />

= + +<br />

=<br />

270 MHR ● Chapter 5: <strong>Surface</strong> <strong>Area</strong>

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