3 years ago

Find the surface area of a cylinder with a diameter of 8 yards and a height of 9 yards.

Mathematics

1 answer:

marysya [2.9K]3 years ago

5 0

Answer:

a=326.76 yd^2

Step-by-step explanation:

a= 2pi(d/2)h+2pi(d/2)^2=2pi(8/2)9+2pi(8/2)^2= 326.72564yd^2

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Need help finding out what 3x=y and x-2y = 10

sweet-ann [11.9K]

Answer:

x=-2, y=-6

Step-by-step explanation:

Simple substitution.

Since y is isolated in one of the equations already, you can plug it into the second equation.

x - 2(3x) = 10

x - 6x = 10

-5x = 10

x = -2

Sub. x = -2 into 3x = y:

3(-2) = y

y = -6

4 0

3 years ago

Please really need the correct answer for this or I'll fail algebra 3

trapecia [35]

Answer:

$4\pi$

Step-by-step explanation:

S = Arc Lenth

θ = Radians

R = Radius

S = θR

So, now that we understand the formula, we will convert 72° into radians by introducing the equation $x*\frac{\pi }{180}$ , x = 72

S = $72*\frac{\pi }{180} * R$

given that R = 10

S = $\frac{72*10*\pi }{180}$

S = $\frac{720*\pi }{180}$

We simplify 720 as 180 goes into 720 4 times and we get

S = $4\pi$

Hope this helps

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2 years ago

At the toll booth, the chance that a driver has exact change is 1/4, independent of vehicle. Find the probability that no vehicl

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Answer:

Step-by-step explanation:

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3 years ago

Kelly and Max run a race. Max takes 42 seconds to run the race. She is 7 seconds faster then Kelly. How many seconds does Kelly

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Answer:

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Step-by-step explanation:

if you simply minus 7 seconds from max 42 second time you get 35 seconds.

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4 years ago

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