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3 years ago

The surface area, A, of a cylinder is given by the formula A = 2 Trh + 2nr, where ris the radius and h is the height

Mathematics

1 answer:

lord [1]3 years ago

7 0

Answer:

Area = 87.9646 sq. units from A = 28*π sq. units.

However I cannot see this in your answer list, since the numbers look all jumbled. Choice A. looks close to it, since there is a 28...

Step-by-step explanation:

We have a cylinder with height h = 5

radius = 2

We want the surface area of this cylinder.

A = (circumference)*h + 2*(pi)*r^2

A = ( 4*π)*5 + 2*π*(2^2)

A = 20π + 8π = 28 π square units

A = 87.9646 sq.. units

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3 years ago

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Answer:

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For 2 decks, she has 104 cards, or 52×1 cards.

For 5 decks, she has 260 cards, or 52×5 cards.

For 10 decks, she has 520 cards, or 52×10 cards.

Therefore, for b decks, she has 52×b, or 52b cards.

**This content involves writing algebraic expressions, which you may wish to revise. I'm always happy to help!

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