What is the lateral area of this regular octagonal pyramid? 84.9 cm² 120 cm² 169.7 cm² 207.8 cm²

Mathematics

2 answers:

ahrayia [7]2 years ago

3 0

Like jdoe0001 answered with 8[1/2(5)(6 $8[ \frac{1}{2} (5)(6 \sqrt{2} )]$ if you solve the equation he/she gave you then you get 167.70562748. so your answer will be 167.7 cm^2

Lesechka [4]2 years ago

3 0

Check the picture below.

the lateral area, namely the area of the sides, in this case will be the area of all the triangular faces of the OCTAgonal pyramid, OCTA=8, so there are 8 of them.

now, each triangular face, has a base of 5 and a height of 6√2, so we simply get the area of each triangle and sum them up,

$\bf \stackrel{\textit{area of the 8 triangles}}{8\left[ \cfrac{1}{2}(5)(6\sqrt{2}) \right]}
$

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