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3 years ago

I need help with this.

Mathematics

1 answer:

Sloan [31]3 years ago

4 0

9514 1404 393

Answer:

61.4

Step-by-step explanation:

The length of two semicircles of diameter 10 is the circumference of a circle of that diameter:

C = πd = 10π ≈ 31.4

The perimeter includes that length plus the lengths of two straight sides that are 15 units each.

P = 31.4 + 2×15

P = 61.4 . . . . units

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lutik1710 [3]

Answer:

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2 years ago

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If f(x) = 2x + 3 and g(x) = x^2 + 1,find f(g(3)). A.) 23 B.) 47 C.) 82 D.) 90

marta [7]

The answer is A). 23.
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3 years ago

A cylinder has a diameter of 6 feet. the volume of the cylinder is 36/5π cubic feet.

Anton [14]

Answer:

Height of cylinder is $\frac{4}{5}\ ft$ .

Step-by-step explanation:

Diameter of cylinder, D = 6 feet

Relation between Radius, R and diameter, D is given by:

$R = \dfrac{D}{2}$

So, radius, R = $\frac{6}{2} \Rightarrow 3$ feet

Let height of cylinder be $h$ feet.

Formula for volume of cylinder is given by:

$V = \pi R^{2} H$

Where, R is the radius of base of cylinder

and H is the height of cylinder

We are given that,

$V = \dfrac{36 \pi}{5} ft^{3}$

Using formula for volume, $V = \pi R^{2} H$

$\dfrac{36\pi}{5} = \pi \times 3^{2} \times h\\\Rightarrow \dfrac{36\pi}{5} = \pi \times 9 \times h\\\Rightarrow h = \dfrac{4}{5} ft$

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3 years ago

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Orlov [11]

Answer:

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Step-by-step explanation:

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QUESTION 2 84 is 30% of what number?

Tpy6a [65]

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Step-by-step explanation:

100/30=3.(3)

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3 years ago

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