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dangina [55]
3 years ago
5

how do I find the surface area of a square pyramid if the length is 11mm and the slant height is 13mm?

Mathematics
1 answer:
melamori03 [73]3 years ago
6 0

Answer:

407mm²

Step-by-step explanation:

the triangle face is 1/2(11)(13) = 71.5

there are 4 triangle faces so 71.5 x 4 = 286

plus the bottom, 11 * 11 = 121

286+121=407mm²

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