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2 years ago

Please Help Find the circumferences of of both circles to the nearest hundredth.

Mathematics

1 answer:

torisob [31]2 years ago

7 0

Step-by-step explanation:

small circle

C= pi D

C = 3.1415(9)

C= 28.3 ft

large circle

C= 2(3.1415)(7)

C = 44 ft

Add 28.3 + 44 = 72.3 ft

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What is the surface area of the cylinder? Use three and fourteen-hundredths for pi and round to the nearest hundredth. Enter you

nadya68 [22]

Answer:

954.56 cm²

Step-by-step explanation:

Firstly i would calculate the circumference of the circles on top of the cylinders:

Circumference of circles = $\pi d$ or $2\pi r$

d = diameter

r = radius

I will use $2\pi r$

circumference = 2 x 3.14 x 8 = 50.24 cm

⇒ This would help me to find out the surface area of the side of the cylinder

50.24 x 11 = 552.64 cm²

⇒ This is the surface are of the sides

Now we have to find the are of the two circles on the top and the bottom:

Area of a circle = $\pi d^{2}$

d = diameter

3.14 x 8² = 200.96

⇒ There are two circles so you would times 200.96 by 2

200.96 x 2 = 401.92

Add all the values up:

401.92 + 552.64 = 954.56 cm²

I hope this helps!

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2 years ago

What is 4 times 4 and 5555 times 8999989

Ket [755]

Answer:

4 *4 = 16

16 * 5555 = 88880

88880 * 8999989 = 799919022320

Brainliest :D

Step-by-step explanation:

8 0

2 years ago

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if you add 12 to my number and then multiply the result by 3, you will get 64 more than two-thirds of my number. Find My number.

just olya [345]

Answer:

10?

Step-by-step explanation:

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2 years ago

14.371 value of 1 in decimal form

artcher [175]

0.001. hope that helped

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3 years ago

To solve the equation 5sin(2x)=3cosx, you should rewrite it as___.

galina1969 [7]

Answer:

Step-by-step explanation:

We want to solve the equation:

$5\sin(2x)=3\cos(x)$

To do so, we can rewrite the equation.

Recall the double-angle for sine:

$\sin(2x)=2\sin(x)\cos(x)$

By substitution:

$5\left(2\sin(x)\cos(x)\right)=3\cos(x)$

Distribute:

$10\sin(x)\cos(x)=3\cos(x)$

We can subtract 3cos(x) from both sides:

$10\sin(x)\cos(x)-3\cos(x)=0$

And factor:

$\cos(x)\left(10\sin(x)-3\right)=0$

Hence, our answer is A.

*It is important to note that we should not divide both sides by cos(x) to acquire 10sin(x) = 3. This is because we need to find the values of x, and one or more may result in cos(x) = 0, and we cannot divide by 0. Hence, we should subtract and then factor.

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2 years ago

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