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2 years ago

I’m honestly confused I will mark Brainliest

Mathematics

2 answers:

Ann [662]2 years ago

8 0

Answer:

502.4 units³

Step-by-step explanation:

Volume of a cylinder = π r² h

where r is the base radius
h is the height of the cylinder

$volume \: = 3.14 \times {4}^{2} \times 10 \\ volume \: = 3.14 \times 16 \times 10 \\ volume \: = 502.4 \: {unit}^{3}$

Mariana [72]2 years ago

6 0

Answer:

28 units !

brainliest please.

Step-by-step explanation:

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Step 1: Distribute the plus

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If cosθ=2/3 find cscθ using identities. This is in quad. 1.

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Step-by-step explanation:

cos θ = 2/3

$\quad \twoheadrightarrow\sf {cos \; \theta = \dfrac{Base}{Hypotenuse} } \\$

Hence, base = 2 units and hypotenuse = 3 units.

$\quad \twoheadrightarrow\sf { H^2 = B^2 + P^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = H^2 - B^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = (3)^2 - (2)^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = 9- 4} \\$

$\quad \twoheadrightarrow\bf { P = \sqrt{5}} \\$

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$\quad \twoheadrightarrow\sf {cosec \; \theta = \dfrac{Hypotenuse}{Perpendicular} } \\$

$\quad \twoheadrightarrow\bf{cosec \; \theta = \dfrac{3}{\sqrt{5}} } \\$

Therefore, the required answer is 3/√5.

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