Ask question

Ask question

All categories

2 years ago

7

Sandra calculated the height of a cylinder that has a volume of 576 pi cubic centimeters and a radius of 8 cm. Her Her work is s

hown below. What era did Sandra make when calculating the height of the cylinder?

2 answers:

Kruka [31]2 years ago

7 0

Answer:

pretty sure its c

Step-by-step explanation:

<em>I THINK</em>

Bond [772]2 years ago

5 0

Answer:c

Step-by-step explanation: in step 4

You might be interested in

Please help with this and explain the answer.

zysi [14]

Answer:

48.06

Step-by-step explanation:

b^2+c^2=A^2

45+16=42.06

add the extra 6

3 0

2 years ago

3. A balancing balloon toy is in the shape of a hemisphere (half-sphere) attached to the base of a cone. If the toy is 4ft tall

Katen [24]

Answer:

The volume of the toy is $V=5.23\ ft^3$

Step-by-step explanation:

step 1

Find the volume of the hemisphere

The volume of the hemisphere is given by the formula

$V=\frac{2}{3}\pi r^{3}$

In this problem, the wide of the toy is equal to the diameter of the hemisphere

so

$D=2\ ft$

$r=2/2=1\ ft$ ----> the radius is half the diameter

substitute

$V=\frac{2}{3} \pi (1)^{3}=\frac{2}{3} \pi\ ft^3$

step 2

Find the volume of the cone

The volume of the cone is given by

$V=\frac{1}{3}\pi r^{2}h$

we know that

The radius of the cone is the same that the radius of the hemisphere

so

$r=1\ ft$

The height of the cone is equal to subtract the radius of the hemisphere from the height of the toy

$h=4-1=3\ ft$

substitute the given values

$V=\frac{1}{3}\pi (1)^{2}(3)=\pi\ ft^3$

step 3

Find the volume of the toy

we know that

The volume of the toy, is equal to the volume of the cone plus the volume of the hemisphere.

so

$V=(\frac{2}{3} \pi+\pi)\ ft^3$

$V=(\frac{5}{3}\pi)\ ft^3$

assume

$\pi=3.14$

$V=\frac{5}{3}(3.14)=5.23\ ft^3$

5 0

3 years ago

Convert fraction no. 2/7 to percentage

alina1380 [7]

2/7 ≈ 0.2857
To determine percentage, move decimal 2 places to the right. ≈ 28.57%

3 0

2 years ago

Read 2 more answers

How do you do this? Please tell me step by step

Ainat [17]

8x-2=-9+7x
Add 2 to both sides
8x=-7+7x
Subtract 7x from both sides
x=-7

6 0

3 years ago

If two cubes have edges of 1 and 2 , what is the sum of their volume???

Ivan

Volume of a cube: V = s^3, where s is the length of the edge.

So, the sum of them will be 1^3 + 2^3 = 9

7 0

3 years ago