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True [87]
3 years ago
6

Please Help :D 助けてください

Mathematics
1 answer:
qaws [65]3 years ago
8 0

Answer:

1. false

2. true

3. false

4. false

Step-by-step explanation:

1. 128 is not equal to 125

2. 119.7 = 119.7

3. 13.2 is not equal to 1.32

4. 5.88 is not equal to 12

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What is the volume for the cone
alex41 [277]

Answer:

50.2654825cm^3 or 16 \pi cm^3

Step-by-step explanation:

useds a calculator

5 0
3 years ago
Read 2 more answers
Please help me!!! Geometry question.
tigry1 [53]

Answer:

The volume of the figure is (\frac{l^{3}}{3})[\frac{\pi }{2}-1]\ units^{3}

Step-by-step explanation:

we know that

The volume of the figure is equal to the volume of the cone minus the volume of the square pyramid

step 1

Find the volume of the cone

The volume of the cone is equal to

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

we have

r=\frac{l\sqrt{2}}{2}\ units ----> the diagonal of the square base of pyramid is equal to the diameter of the cone

h=l\ units

substitute

V=\frac{1}{3}\pi (\frac{l\sqrt{2}}{2})^{2}(l)

V=\frac{1}{6}\pi (l)^{3}\ units^{3}  

step 2

Find the volume of the square pyramid

The volume of the pyramid is equal to

V=\frac{1}{3}Bh

where

B is the area of the base

h is the height of the pyramid

we have

h=l\ units

B=l^{2}\ units^{2}

substitute

V=\frac{1}{3}l^{2}(l)

V=\frac{1}{3}l^{3}\ units^{3}

step 3

Find the volume of the figure

\frac{1}{6}\pi (l)^{3}\ units^{3}-\frac{1}{3}l^{3}\ units^{3}=(\frac{l^{3}}{3})[\frac{\pi }{2}-1]\ units^{3}

5 0
3 years ago
What is the square root of 1,024
Shkiper50 [21]
1024 can be factored into 
<span>2(512) </span>
<span>=2^2(256) </span>
<span>=2^3(128) </span>
<span>=2^4(64) </span>
<span>=2^5(32) </span>
<span>=2^6(16) </span>
<span>=2^10 </span>

<span>Therefore, </span>
<span>√1024 = √(2^10) = 2^5 = 32</span>
4 0
3 years ago
What is the sales tax on the chair shown if the tax rate is 5.75% ( the chairs price is $178.90)
Arturiano [62]
Sales tax is:
$178.90* (5.75/100)=$10.29

The sales tax of the chair is $10.29~
7 0
3 years ago
Geometry Special Quadrilaterals show work please
Charra [1.4K]

Answer:

a = 16

w = 125

x = 120

y = 55

Step-by-step explanation:

<u>FINDING 'a'</u>

31 = a + 46 / 2

62 = a + 46

16 = a

<u>FINDING 'w'</u>

* This section looks Non-Isosceles trapezoid so I will be following the rule according it

w + 55 = 180

w = 125

<u>FINDING 'y'</u>

y = 55

- Because of corresponding angles

<u>FINDING 'x'</u>

* In this case it looks like we are still dealing w/ an non-isosceles trapezoid.

x + 60 = 180

x = 120

Hope this helped ^^

(Please inform me of any mistakes or misunderstandings!)

6 0
3 years ago
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