What are the common factors of 12 and 24?
2 answers:
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Answer:
<em>The surface area is multiplied by 4/9.</em>
Step-by-step explanation:
<u>Surface Area of a Cone</u>
Being r the radius and l the slant height of a cone, then its surface area is
Now let's think both the radius and the slant height are multiplied by the same factor k, i.e.
r'=kr
l'=kl
The new surface area is
The new surface area is the times original SA. Since k=2/3, then
The surface area is multiplied by 4/9.
If we want to calculate the full prize we need to calculate how much the tax was:
420* 17
%=420*
=420*
=21*
=73.5
so this is how much the tax was.
and the full prize is the cost of the ring and the tax: 420+73.5=493.5
so that's how much the buyer will pay
420* 17
so this is how much the tax was.
and the full prize is the cost of the ring and the tax: 420+73.5=493.5
so that's how much the buyer will pay