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kozerog [31]
3 years ago
7

Please help me someone

Mathematics
1 answer:
quester [9]3 years ago
6 0

Answer:

For the regular pyramid shown in picture:

Using Pythagorean theorem: L = sqrt((4/2)^2 + 11^2)

Lateral area = Area of one lateral face x 4 = (L x 4/2) x 4 = 89.4

The surface area = Lateral are + base = 89.4 + 4 x 4 = 105.4

Hope this helps!

:)

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