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2 years ago

Please help me understand the question

Mathematics

1 answer:

Sholpan [36]2 years ago

3 0

Answer:

○ $\displaystyle \textcolor{black}{C.}\:triangle$

Explanation:

This is a triangular prism. Its faces are triangular, but the lateral faces are rectangular. All prisms will have lateral faces shaped as rectangles. Do not ever forget this.

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Nimfa-mama [501]

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3 years ago

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den301095 [7]

Answer:

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Step-by-step explanation:

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3 years ago

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If g(a) = (a + 4)2 and h(b) = 2b - 7, what is h(g(2))?

masha68 [24]

First find g(2).

g(2) = (2+4)2 = 12

Because g(2) is 12, h(g(2)) = h(12).

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3 years ago

A cylinder with a radius of 1 cm and a height of 21 cm has the same volume as a cone with a height of 7 cm. What is the radius o

Natasha_Volkova [10]

Answer:

Step-by-step explanation:

The formula of a volume of a cylinder:

$V=\pi r^2H$

r - radius

H - height

We have r = 1cm and H = 21cm. Substitute:

$V=\pi(1^2)(21)=21\pi\ cm^3$

The formula of a cone:

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

r - radius

H - height

We have V = 21π cm³ and H = 7cm. Substitute:

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$\dfrac{1}{3}r^2=3$ multiply both sides by 3

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3 years ago

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In-s [12.5K]

Answer:

Step-by-step explanation:

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