(N-2)*180/n
Octagon has 8 sides
(8-2)*180/8
=135
So 4 triangular faces of the pyramid will have total area
<span>= 4 ×<span>12 </span>× base × height = 4 × <span>12 </span>× 34 × 58f<span>t2 </span>= 3944f<span>t2</span></span>
So <span>3944f<span>t2</span></span> of marble cover the faces of the pyramid.
Answer:
Therefore the height of the tower is 101.79 m.
Step-by-step explanation:
The ratio of the height of an object to the shadow of the object is always constant at certain time.


Given that,the length of the pole is 3.5 m and it casts a shadow that is 1.47 m long.
The length of shadow that castes by a tower is 42.75 m long.
Here h₁= 3.5 m, s₁=1.47 m, h₂= ? and s₂=42.75 m

⇒3.5 ×42.75 = h₂× 1.47

⇒h₂ = 101.79 m (approx)
Therefore the height of the tower is 101.79 m.
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According to the table ;

Let's check that in which of the equations it happens.
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A )




Wrong
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B )




Correct.
Thus this option is the correct answer.
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C )
<em>
</em>
<em>
</em>
<em>
</em>
<em>
</em>
Wrong
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