Respuesta :
Answer:
- slant height: 6 units
- lateral area: 108 square units
Step-by-step explanation:
Given
A right regular hexagonal pyramid with ...
- base side length 6 units
- base apothem 3√3 units
- height 3 units
Find
- lateral face slant height
- pyramid lateral surface area
Solution
a) The apothem (a) and height (b) of the pyramid are two legs of the right triangle having the slant height as its hypotenuse (c). The Pythagorean theorem tells us the relationship is ...
c = √(a² +b²) = √((3√3)² +3²) = √(27+9) = √36
c = 6
The slant height of the pyramid is 6 units.
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b) The lateral surface area of the pyramid is the area of each triangular face, multiplied by the number of faces. The area of one face will be ...
A = (1/2)bh = (1/2)(6 units)(6 units) = 18 units²
Then the lateral surface area is 6 times this value:
SA = 6(18 units²) = 108 units²
The lateral surface area of the pyramid is 108 square units.
Answer:
If a side of the hexagon is 6 units long, then the apothem is
3√3 units long.
The slant height is the hypotenuse of a right triangle formed with the apothem and the
height of the pyramid
Using the Pythagorean theorem c = to find the slant height results in a slant height of
6 units.
The lateral area is
108 square units.
Step-by-step explanation: