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snow_lady [41]
3 years ago
13

what is the surface area of this square pyramid with a base length of 4 centimeters and slant height of 9 centimeters? HELP PLEA

SE!!!!

Mathematics
1 answer:
Natalija [7]3 years ago
6 0

Answer:

The surface area of a square pyramid = 1/2 * slant height * base perimeter + area of base

The slant height is 8 cm

The base perimeter is 4 * 5 cm = 20 cm

The area of the base is 5 cm * 5 cm = 25 cm**2

Plugging into the formula the area =

1/2 * 8 cm * 20 cm + 25 cm**2 =

4 cm * 20 cm + 25 cm**2 =

80 cm**2 + 25 cm**2 = 105 cm**2

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