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3 years ago

What is the surface area of the cylinder with height 4 in and radius 4 in? Round your answer to the nearest thousandth.

Mathematics

1 answer:

alina1380 [7]3 years ago

7 0

Answer:

201.06

Step-by-step explanation:

A=2πrh+2πr^2=2·π·4·4+2·π·4^2

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Find the length of each missing side and each missing angle in the isosceles triangle below.

Zarrin [17]

Answer:

x = 45

y = 45

z = 11.1

Step-by-step explanation:

Remark

The triangle is a right triangle. That means that it has 1 right angle.

It is also isosceles which means that the two legs that are not the hypotenuse are equal.

Result: z and 11.1 are equal z = 11.1

More remark

If the triangle is isosceles, that means that the angles that are not right angles must also be equal.

90 + x + y = 180

but x = y

90 + 2x = 180 Subtract 90

2x = 180 - 90 Divide by 2

2x/2 = 90/2

x = 45

3 0

3 years ago

identify the initial amount,a,and the growth factor,b,in each exponential function.Break b into (1+r)where r is the rate of grow

Alla [95]

Given function : $y=1.05(1.46)^x$

We need to identify a " initial amount", b "growth factor", r " rate of growth".

We know, exponential growth formula

$y=a(b)^x$ , where a is initial amount, b is growth factor. On comparing with given function let us find values of a and b.

$y=1.05(1.46)^x$ ⇔ $y=a(b)^x$ .

We can see a= 1.05 and b = 1.46.

Now, b=1+r.

Therefore, 1+r =1.46.

Subtracting 1 from both sides, we get

1+r-1 =1.46-1

r = 0.46.

On converting 0.46 into percentage, we get

0.46 × 100 = 46.

Therefore, intial amount a = a= 1.05 , growth factor b = 1.46, and the rate of growth r= 46%.

5 0

3 years ago

What is the absolute value of 4/13

natali 33 [55]

The absolute value of 4/13 is 4/13 because when you put something in absolute value it becomes positive and sense this is already positive it stays. hope this helps :))))

8 0

3 years ago

Read 2 more answers

Can anyone explain to me how to do this question ? ty !!

julia-pushkina [17]

Step-by-step explanation:

use a little imagination.

the whole thing is a combination of churches and half- circles.

and you know the formula for the area of a circle ?

A = pi×r²

so, the only difficulty is to find the circles and then the radius of each involved circle.

when you look at the picture, the shaded area is almost identical to the lower half of the main circle.

2 bumps "look" over into the other side, but one equally sized bump is removed from this lower half.

so, as a first step we will calculate the area of the lower half of the main circle.

the diameter is 24 m, so the radius is half of that : 12m

the area of the large circle is therefore

pi×12² = 144×pi m²

since we only need the (lower) half, we divide this by 2 :

144×pi / 2 = 72×pi m²

the bumps up and down are actually half-circles too. just of smaller circles.

since AB = BC = CD, we know each of these lines are 1/3 of the main diameter AD.

so, the diameter of the smaller circles is 24/3 = 8 m

and their radius is half of that = 8/2 = 4m

the area of such a small circle is therefore

As = pi×4² = 16×pi m²

and a small half-circle area is then

16×pi / 2 = 8×pi m²

so, for the full shaded area I need to take the large half-circle and add 2 small half-circles, and then subtract 1 small half-circle.

so, in total I only need to add 1 small half-circle.

Ashaded = 72×pi + 8×pi = 80×pi m²

5 0

3 years ago

Hi please answer this

mrs_skeptik [129]

Answer:

$60\sqrt{3 \\ }$

Step-by-step explanation:

in a cube, the diagonal is the length of a side times square root of 3

8 0

4 years ago

Read 2 more answers