A city park has an architectural pillar in the shape of a triangular pyramid. The shape of the base of the pillar is an equilateral triangle. The dimensions of the shape of the pillar are as shown below.
The park plans to repaint the lateral area of the pillar. The area of the pillar that will be repainted is _______________ ft2.
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OpenStudy (anonymous):
OpenStudy (anonymous):
@ganeshie8
ganeshie8 (ganeshie8):
Lateral area means area of sides oly. without the base
ganeshie8 (ganeshie8):
Lateral Area of pyramid = \(P*l/2\)
\(P\) : Perimeter of base
\(l\) : Slant height of pyramid
OpenStudy (anonymous):
So, 8 * 14/2 ?
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ganeshie8 (ganeshie8):
how did u get 8 for perimeter ?
OpenStudy (anonymous):
2*2*2 ?
ganeshie8 (ganeshie8):
perimeter of base = length around the base
= 2 + 2 + 2
= 6
ganeshie8 (ganeshie8):
you need to add all sides for perimeter
OpenStudy (anonymous):
oops, I multiplied lol. So, 6 * 14/2 = 42 ??
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