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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asked Aug 9, 2017 47.4k views

3 votes

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

Mathematics
high-school

Tim Almond asked

by Tim Almond

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1 Answer

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Answer:

D. 297 ft^2

Explanation:

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

SA = 297 ft^2

Simon Pickup answered Aug 12, 2017

by Simon Pickup

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