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allsm [11]
3 years ago
8

Can someone help it would be very helpful

Mathematics
1 answer:
kotegsom [21]3 years ago
7 0

Answer:

Use formula

area of trapezium=(a+b)/2×h

Step-by-step explanation:

1)

area of trapezium=(a+b)2×j

  • (8×4)/2×6
  • 96in²

as this u can calculate all of yr areas.

<h2>stay safe healthy and happy.</h2>
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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
1 year ago
Are collinear points coplanar?
Anna35 [415]

collinear points are points in the same line, like

●-----------------●------------------------------------------●

and the line will always be contained by a plane, so since the line is in a plane, all points in it will also be in the same plane, and therefore be coplanar.

8 0
3 years ago
What is 6004720080 in expanded form
Kazeer [188]
6,000,000,000+4,000,00+700,000+20,000+80
5 0
3 years ago
Can someone help me with this
allsm [11]

Yeah now I will help you XD

So, as AC is diameter arc ABC must be a semicircle so tou gotta mark option 1

4 0
3 years ago
What is the formula of quadratic equations?
Svet_ta [14]
This is the General quadratic equation

3 0
3 years ago
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