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Pavel [41]
3 years ago
6

Chris is buying new wood flooring for his house. The cost depends on the area of the floors.

Mathematics
1 answer:
GalinKa [24]3 years ago
6 0

Answer:

strong and fexible .

variable

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At cheng’s bike rental cost $40 to rent a bike for seven hours how many dollars does it cost per hour of bike use
Alchen [17]
40$. 7hrs
X$. 1hr
X=40•1/7
X~5.71 $ per hour
3 0
3 years ago
Please asap<br>for 10 points!​
kari74 [83]
<h3>Given:</h3><h3>Large cone:</h3>
  • r= 8 cm
  • h= 20 cm
<h3>Small cone:</h3>
  • r= 4 cm
  • h= 10cm
<h3>Note that:</h3>
  • r: radius
  • h: height
<h3>To find:</h3>
  • The volume of the frustum of the given cone.
<h3>Solution:</h3>
  • Frustum is a part of a cone formed by cutting off the top by a parallel plane.

\large\boxed{Formula: V= \frac{1}{3}\pi{r}^{2}h}

Let's solve!

First, let's find the volume of the smaller cone.

Substitute the values according to the

formula.

V= \frac{1}{3}×\pi×{4}^{2}×10

V= 167.5516082 \: {cm}^{3}

Now, we can round off to the nearest hundredth.

The value in the thousandths place is smaller than 5 so we won't have to round up.

\boxed{V= 167.55 \: {cm}^{3}}

Next, let's find the volume of the bigger cone.

Substitute the values according to the formula.

V= \frac{1}{3}×\pi×{8}^{2}×20

V= 1340.412866 \: {cm}^{3}

Now, we can round off to the nearest hundredth.

The value in thousandths place is smaller than 5 so we won't have to round up.

\boxed{V=1340.41 \: {cm}^{3}}

Now, we can find the volume of the frustum.

We'll have to minus the volume of the smaller cone from the bigger cone.

V= 1340.41-167.55

\large\boxed{V= 1172.86 \: {cm}^{3}}

<u>Hence, the volume of the frustum is 1172.86 cubic centimeters.</u>



8 0
2 years ago
Q4. The dimensions of a rectangular sheet of metal are 9.96m by 5.08 m. Find
Vesnalui [34]

Answer:

a) 30m

b) 50.6m²

Step-by-step explanation:

Perimeter = 2(length + width)

= 2(9.96 + 5.08)

= 30.08 m

Area = length × width

9.96 × 5.08

50.5968 m²

6 0
3 years ago
Add (2x+5) + (3x-7)<br> plsssssss SBUIAXSBADJASN
MArishka [77]
2x+3x= 5x
5-7= -2

so its 5x-2 since all like terms are added
6 0
3 years ago
Please help me ASAP thank you
Allisa [31]

101+ 6x-5=180

6x=84

x=14

hope this helps!

5 0
3 years ago
Read 2 more answers
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