3 years ago

Damien is buying his first car for $3,500. If the discount rate is 9%, how much will he pay for his car after the discount?

Mathematics

1 answer:

likoan [24]3 years ago

5 0

Answer:

He will pay $3,185 after the 9% discount

Step-by-step explanation:

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MrRa [10]

<h2>Answer:</h2>

The volume of the cone in terms of π is:

A. 392π in³

<h2>Step-by-step explanation:</h2>

The radius of the cone i.e. r is: 7 in.

and the slant height of the cone i.e. l=y=25 in.

and let h=x be the height of the cone.

Now, using the Pythagorean Theorem we have:

$l^2=r^2+h^2\\\\i.e.\\\\h^2=l^2-r^2\\\\i.e.\\\\h^2=(25)^2-7^2\\\\i.e.\\\\h^2=625-49\\\\i.e.\\\\h^2=576\\\\i.e.\\\\h=\sqrt{576}\\\\i.e.\\\\h=24$

Hence, we get:

$h=x=25\ in.$

Now, the volume of the cone is given by:

$Volume=\dfrac{1}{3}\pi r^2h\\\\i.e.\\\\Volume=\dfrac{1}{3}\times\pi\times (7)^2\times 24\\\\i.e.\\\\Volume=392\pi\ in^3$

Hence, the answer is: Option: A

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