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3 years ago

ANSWER QUICK* Pleasee i need it

Mathematics

2 answers:

Brilliant_brown [7]3 years ago

7 0

Answer:

Step-by-step explanation:

1- 4 3/7 make the fraction improper again

2- 31/7 (do 4×7 for the full number which equals 28 + the remaining 3 which equals 31/7)

Alona [7]3 years ago

3 0

4 3/7

Mutiply the whole number with the denominator. 4*7= 28. Add 28 with the numerator. 28+3= 31

4 3/7= 31/7

Answer: D 31/7

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B) The number of volume of a cylinder is half of its number of the total surface area.

faust18 [17]

Answer:

$V=179.6cm^3$

Step-by-step explanation:

the volume of a cylinder is given by:

$V=\pi r^2h$

where r is the radius and h is the height.

and the surface area:

$SA=2\pi r^2+2\pi rh$

the first term is the area of the circles and the second term is the area of the body.

since "The number of volume of a cylinder is half of its number of the total surface area." we will have that:

$V=\frac{1}{2}SA$

substitutig the equivalent expressions on each side:

$\pi r^2 h = \frac{1}{2} (2\pi r^2+2\pi r h)$

and we simplify and solve for the height (since is the value we don't know of the cylinder):

$\pi r^2 h = \pi r^2+\pi r h\\\pi r^2h-\pi rh=\pi r^2\\h(\pi r^2-\pi r)=\pi r^2\\h=\pi r^2/(\pi r^2-\pi r)$

we substitute the value of the radius $r=7cm$ , and we get:

$h=\pi (7cm)^2/(\pi (7cm)^2-\pi (7cm))\\h=153.938/(153.938-21.991)\\h=153.938/131.947\\h=1.1666cm$

thus the volume is:

$V=\pi r^2h$

$V=\pi (7cm)^2(1.1666cm)\\V=179.6cm^3$

3 0

3 years ago

Read 2 more answers

If 59% was 2687 what is 29% of the unmentioned number?

wariber [46]

Answer:

2687

2687×100/59=4554.2

29×4554.2/100= 2686.97 aprox. 2687

6 0

3 years ago

You are designing a container in the shape of a cylinder. The radius is 6 inches. You want the container to hold at least 324π c

goldfiish [28.3K]

Answer: 9 inches

Explaination: The volume of a cylinder, V = (πr^2)H, so H = V/(πr^2).

Using the parameters you specified, H = 324π/[(π)(6^2)] = 324π/36π = 324/36 = 9 inches

4 0

3 years ago

Suppose you are given a square with an inscribed circle. If the area of the square is 36 m^2. What is the area of the circle?

loris [4]

If the square has sides of 6 the circle has a radius of 3 so it's area is 9pi

4 0

3 years ago

Read 2 more answers

Need answers ASAP

a_sh-v [17]

We know, Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 18³
v = 4.186 * 5832
v = 24,416.64 cm³

Volume of a Sphere = 4/3 πr³
v = 4/3 * 3.14 * 12³
v = 4.186 * 1728
v = 7234.56 cm³

Difference = 24,416.64 - 7234.56 = 17182.08

In short, Your Answer would be: 17182.08 cm³

Hope this helps!

6 0

3 years ago

**ANSWER QUICK*** Pleasee i need it

ANSWER QUICK* Pleasee i need it