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3 years ago

What is the volume of this cone?

Mathematics

1 answer:

Natasha2012 [34]3 years ago

7 0

Answer:

(1/3)πr2h.

Step-by-step explanation:

Volume of a cone:

V = (1/3)πr2h

Slant height of a cone:

s = √(r2 + h2)

Lateral surface area of a cone:

L = πrs = πr√(r2 + h2)

Base surface area of a cone (a circle):

B = πr2

Total surface area of a cone:

A = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2))

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2 years ago

Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

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$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

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We add half the coefficient of
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3 years ago

X +5+11x=12x+Y It says find the value of y that makes each equation true for all values of

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Subtract 12x from each side makes each zero.

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3 years ago

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2 years ago

What is the volume of this cone?​

What is the volume of this cone?