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3 years ago

11

Jessica is a custodian at Arco Arena she waxes 20m squared of the floor in 3/5 of an hour Jessica waxes the floor at a constant

rate

1 answer:

Bad White [126]3 years ago

5 0

Bc she said no I I j I j he hbu hdb 454 u.

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Please help me with this

horrorfan [7]

Answer:

$\dfrac{4000\pi}{3}$ ft³

Step-by-step explanation:

First, let's figure out how to get the <em>volume </em>of a sphere from its <em>surface area</em>. If r is the radius of our sphere, then

The formula for a sphere's surface area is $A = 4\pi r^2$

The formula for a sphere's volume is $V=\frac{4}{3}\pi r^3$

So to get from area to volume, we have to <em>divide the area by 3 </em>and then <em>multiply it by r.</em> Mathematically:

$V=\frac{A}{3}r$

Before we solve for V though, we need to find the radius of our sphere. Thankfully, we're given the surface area - $400\pi$ ft² - so we can use the area formula to find that radius:

$A=4\pi r^2=400\pi\\r^2=100\\r=10$

And now that we have our radius, we can put it into our volume formula to find

$V=\frac{A}{3} r=\frac{400\pi}{3}(10)=\frac{4000\pi}{3}$ ft³

4 0

3 years ago

Can someone help please

xxMikexx [17]

D- It is an enlargement with a scale factor greater than 1.

From the pre-image to the image, the scale factor is 3.

5 0

3 years ago

A car is driving at 65 kilometers per hour. How far, in meters, does it travel in 4 seconds?

Mumz [18]

Answer:

72.2 m

Step-by-step explanation:

65 km/1 h = (65000 m / 3600s) = 18.05 m/s

Distance = speed * time = 18.05 m/s*4 s = 72.2 m

8 0

3 years ago

What is the next square number in the list? 49, 64, 81,

Anarel [89]

7x7 = 49

8x8=64

9x9=81

10x10=100

5 0

3 years ago

Given a following image is a cube, name a segment that is perpendicular to GH

sergejj [24]

Answer:

Step-by-step explanation:

4 0

2 years ago