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3 years ago

Find the area of a segment formed by a chord 8" long in a circle with radius of 8"

Mathematics

1 answer:

AlekseyPX3 years ago

5 0

$r=8\\\\P=\pi r^2\\\\P=\pi\cdot8^2=64\pi$

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What is 4.338 as a fraction when the 338 is repeating i give brianliest

Inga [223]

If x = 4.338338338…, then

1000x = 4338.338338338…

and subtracting x from this eliminate the trailing decimal.

1000x - x = 4338.338338338… - 4.338338338…

999x = 4334

x = 4334/999

6 0

2 years ago

Surface Area of Cylinder=2πrh+2πr2

Alex

Find the surface area when r is 8 inches and h is 8 inches.

$\qquad$ A. 160π in²

$\qquad$ B. 154π in²

$\qquad$ C. 288π in²

$\qquad$ D. 256π in² ☑

We are given –

$\qquad$ ⇢Radius of cylinder , r = 8 inches

$\qquad$ ⇢ Height of cylinder, h = 8 inches.

We are asked to find surface area of the given cylinder.

Formula to find the surface cylinder given by –

$\bf \star \pink{ Surface\: Area_{(Cylinder)} = 2\pi rh +2\pi r^2 }$

Now, Substitute given values –

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2\pi rh +2\pi r^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2 \pi \times 8 \times 8 + 2\pi \times 8^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2 \pi \times 8^2 + 2\pi \times 8^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2\pi \times 64 +2\pi \times 64$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} =128 \pi + 128\pi$

$\purple{\bf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 256\pi \: in^2 }$

Henceforth,Option D is the correct answer.

8 0

2 years ago

The area of a rectangle is represented by 5x^2+19x+12. What is the length?

prisoha [69]

$5x^2+19x+12=5x^2+15x+4x+12=5x(x+3)+4(x+3)\\\\=(x+3)(5x+4)\\\\Answer:x+3\ \times\ 5x+4$

7 0

3 years ago

Determine the probability without a Venn Diagram (using the Addition Rule).

Liono4ka [1.6K]

1/1/2 is the answer ............

5 0

3 years ago

I need help ASAP middle school work.

Arturiano [62]

Answer:

Step-by-step explanation:

For 11 1/2 gallons, he paid $36.80.

We need to find the cost per gallon.

First, converting 11 1/2 gallons to decimal, it is:

1/2 = 0.5

So, 11 1/2 is 11.5 gallons

So, Cost Per Gallon (last week) = $\frac{36.80}{11.5}=3.2$

There is 5% increase on this $3.20 per gallon. We find 5% of 3.2 and add it to 3.2 to find this week's cost per gallon.

5% = 5/100 = 0.05

0.05 * 3.20 = 0.16

So,

3.20 + 0.16 = $3.36 per gallon

Cost Per Gallon (this week) = $3.36

To buy 9 1/4 gallons it would take:

$3.36*9.25=31.08$

Note: 1/4 = 0.25, so 9 1/4 = 9.25

It would cost $31.08 to buy 9.25 gallons this week

Correct answer is B

5 0

3 years ago