w arm -u p multiply. 1.39 x77 2.23 x 98 3.76 x 77 4.987 x 67
TRANSCRIPT
WARM-UP
Multiply.
1. 39 x 77
2. 23 x 98
3. 76 x 77
4. 987 x 67
Pre-Algebra
11.5 SURFACE AREA: PYRAMIDS AND CONES
PYRAMID
Surface Area of a Pyramid
SA = LW + 4(bh)
2
finding the area of the base, and the area of each lateral face!
CONE
Surface Area of a Cone
SA = πrl + πr2
l is the slant height of the cone
FIND THE SURFACE AREA OF THE FIGURE AND NAME
THE FIGURE 1. Name:
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FIND THE SURFACE AREA OF THE FIGURE AND NAME
THE FIGURE 2. Name:
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PRACTICE!
1 2 3
PRACTICE
5 6