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Find the surface area of a square pyramid with length 9 ft and slant height 12 ft. A. 90 ft2 B. 45 ft2 C. 171 ft2 D. 297 ft2

Find the surface area of a square pyramid with length 9 ft and slant height 12 ft. A. 90 ft2 B. 45 ft2 C. 171 ft2 D. 297 ft2
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Find the surface area of a square pyramid with length 9 ft and slant height 12 ft.

A. 90 ft2
B. 45 ft2
C. 171 ft2
D. 297 ft2

asked
User Tim Almond
by
7.7k points

1 Answer

5 votes

Answer:

D. 297 ft^2

Explanation:

SA = 4( 1/2 ) (9)(12) + (9)(9)

SA = 297 ft^2

answered
User Simon Pickup
by
7.6k points
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