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3 years ago

HELP PLSSS THIS IS HARD SOMEONE

Mathematics

2 answers:

TiliK225 [7]3 years ago

5 0

Answer:

answer- B

Step-by-step explanation:

mote1985 [20]3 years ago

5 0

The answers B hope this helps

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PLS HELP ITS MY FINAL EXAM What is the area of the base of the cone below? A cone with height 12 feet and volume 90 feet cubed.

hoa [83]

Answer:

$A=22.5\ \text{feet}^2$

Step-by-step explanation:

We have,

Height of a cone is 12 feet

Volume of the cone is 90 feet

It is required to find the area of the base of the cone.

The base of a cone is circular in shape.

The formula used to find the volume of a cone is given by :

$V=\dfrac{1}{3}\pi r^2 h$

here, $\pi r^2=A$ (area of base of cone)

$V=\dfrac{1}{3}\times Ah\\\\A=\dfrac{3V}{h}\\\\A=\dfrac{3\times 90}{12}\\\\A=22.5\ \text{feet}^2$

So, the area of the base of the cone is $22.5\ \text{feet}^2$ .

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3 years ago

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Answer:

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2 years ago

if the radius of a sphere is tripled, the surface area of a sphere will increasea) by a factor of 3b) by a factor of 4c)by a fac

Vlad1618 [11]

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Step-by-step explanation:

The area and the radius of a sphere are related by the formula:

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Step-by-step explanation:

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