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Airida [17]
3 years ago
7

The formula V=arh gives the volume of a cylinder with radius r and height h. Find the volume of a cylinder with radius (x + 4) c

m and height 5 cm. Write your answer in standard form.​
Mathematics
1 answer:
marishachu [46]3 years ago
6 0

Answer:

V = a (x + 4)*5 but see below.

Step-by-step explanation:

You're not going to get any kind of answer that gives V = 122 or some other pure number.

Formula

V = arh

Givens

a = pi * r

r = (x + 4)

h = 5cm

Solution

V = a * (x + 4)*5

or

V = pi * (x + 4)^2  * 5

There is no indication of which one to choose.

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PLEASE HELP! WILL GIVE 70 POINTS!!
Tresset [83]

Answer:

A=189\ mm^2

Step-by-step explanation:

<u>Surface Areas </u>

Is the sum of all the lateral areas of a given solid. We need to compute the total surface area of the given prism. It has 5 sides, two of them are equal (top and bottom areas) and the rest are rectangles.

Computing the top and bottom areas. They form a right triangle whose legs are 4.5 mm and 6 mm. The area of both triangles is

\displaystyle A_t=2*\frac{b.h}{2}=b.h=(4.5)(6)=27 mm^2

The front area is a rectangle of dimensions 7.7 mm and 9 mm, thus

A_f=b.h=(7.5)(9)=67.5 \ mm^2

The back left area is another rectangle of 4.5 mm by 9 mm

A_l=b.h=(4.5)(9)=40.5  \ mm^2

Finally, the back right area is a rectangle of 6 mm by 9 mm

A_r=b.h=(6)(9)=54 \ mm^2

Thus, the total surface area of the prism is

A=A_t+A_f+A_l+A_r=27+67.5+40.5+54=189\ mm^2

\boxed{A=189\ mm^2}

4 0
3 years ago
A map has a scale of 1 cm : 5 km. Determine how far apart two cities are if they are 4 cm apart on the map?
Kay [80]

Answer:

he is right its A

Step-by-step explanation:

5 0
3 years ago
Kim has finished eight of the ten math problems. phil has finished 2/5 of the math problems.How much more of the math has kim fi
MatroZZZ [7]
Kim has 4/5
phil has 2/5

kim has finsihed 2/5 more
4 0
3 years ago
Read 2 more answers
If x = 12 units, y = 4 units, and h = 8 units, find the area of the rhombus shown above using decomposition. A. 16 square units
trapecia [35]
I need this answer as well so when you get the answer can you comment on this so i can see it too? Thank you
4 0
3 years ago
In triangle XYZ, angle Z is a right angle. If sinX=3/4, find tanY.
elena55 [62]

ANSWER

\tan(x)  =  \frac{3\sqrt{7}}{7}

EXPLANATION

\sin(x)  =  \frac{Opposite}{hypotenuse}

\sin(x)  =  \frac{3}{4}

This means the opposite side is 3 units and the hypotenuse is 4 units.

We use Pythagoras Theorem to find

{ |ZX| }^{2}  +  {3}^{2}  =  {4}^{2}

{ |ZX| }^{2}  +9=16

{ |ZX| }^{2} =16 - 9

{ |ZX| }^{2} = 7

{ |ZX| } =  \sqrt{7}

\tan(x)  =  \frac{opposite}{adjacent}

\tan(x)  =  \frac{3}{ \sqrt{7} }

\tan(x)  =  \frac{3}{ \sqrt{7} }  \times  \frac{\sqrt{7}}{\sqrt{7}}

\tan(x)  =  \frac{3\sqrt{7}}{7}

7 0
3 years ago
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