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2 years ago

Yo please help me on this i’ll give u a brainliest

Mathematics

2 answers:

MaRussiya [10]2 years ago

7 0

Answer:

H=3m

Step-by-step explanation:

Volume of cylinder=pir^2h

75pi=pi5^2h

75/25=h

h=3

amid [387]2 years ago

6 0

Answer:

The height is 3 m.

Step-by-step explanation:

The formula for the volume of a cylinder is V=πr^2h, where V is the volume, r is the radius and h is the height.

We are given r, the radius, and the volume, so all we need to do is plug it into the formula and solve for h, our height.

V=πr^2h

Substitute V for 75π and r for 5

75π=π5^2h

Square 5

75π=25πh

Divide by 25π on both sides

3=h

3 m is the height.

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Alicia is sewing a rectangle bedspread that measures 72 inches by 60 inches. The bedspread is red with a gold circle 18 inches i

Natalija [7]

Answer:

$4,066\ in^{2}$

Step-by-step explanation:

we know that

The area of the bedspread that is red is equal to the area of rectangle minus the area of the circle

step 1

Find the area of rectangle

The area is equal to

$A=72*60=4,320\ in^{2}$

step 2

Find the area of the circle

$A=\pi r^{2}$

we have

$r=18/2=9\ in$ ----> the radius is half the diameter

assume

$\pi=3.14$

substitute

$A=(3.14)(9)^{2}$

$A=254.34\ in^{2}$

step 3

Find the area of the bedspread that is red

Find the difference of the areas

$4,320\ in^{2}-254.34\ in^{2}=4,066\ in^{2}$

5 0

3 years ago

A rubber belt connects the two flywheels shown. Find the total

elena-s [515]

Answer:

$L\approx 29.43\,in$

Step-by-step explanation:

The total length of the belt is:

$L = 2\pi\cdot (1.5\,in) + 20\,in$

$L\approx 29.43\,in$

4 0

2 years ago

Read 2 more answers

Help and explain please.

ruslelena [56]

Answer:

a2 + b2 = c2
4 + b2 = 49
b =
$\sqrt{45}$

3 0

2 years ago

Read 2 more answers

the length of 3 peices of wire are in the ratio 10:15:8.if the length of the shortest peice of wire is 2.4 find the difference i

dalvyx [7]

10:15:8
3:4.5:2.4
The difference = 1.5

7 0

2 years ago

If \: x + y + z = 0 \: then \: show \: that \: {x}^{3} + {y}^{3 } + {z}^{3} =3xy<br>

tankabanditka [31]

Answer:

Given

x+y+z=0

⟹x+y=−z

Cubing on both sides

(x+y) 3 =(−z) 3

⟹x 3 +y 3 +3x 2y+3xy 2 =−z 3

⟹x 3 +y 3 +3xy(x+y)=−z 3

⟹x 3+y 3+3xy(−z)=−z 3

⟹x 3 +y 3−3xyz=−z 3

⟹x 3 +y 3 +z 3 =3xyz

Step-by-step explanation:

Hope it is helpful.....

8 0

2 years ago