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3 years ago

Are these two correct

Mathematics

1 answer:

SOVA2 [1]3 years ago

8 0

When it's negative the bigger number is smaller for example -7 is less than -2 or -2 is greater than -7. so they r wrong.

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What is the volume of a small cone if:

Amiraneli [1.4K]

Answer:

Volume of smaller cone =301.44

Step-by-step explanation:

First let angle of cone be $\alpha$ .

then $sin(\alpha )$ = 3/5 (For bigger triangle)

Same cone angle is for smaller one because they are similar.

$cos(\alpha )$ = 4/5

Now for smaller cone radius be R

3/5 =R/Slant height

Slant height =5/3R

Lateral surface area = $\frac{1}{2}R^{2}\beta$ [R = slant height]

Given lateral surface area =60 $\pi$ = $\frac{1}{2}(\frac{5R}{3} )^{2} \beta$ ...................................1

$2\pi R=\frac{5R}{3}\beta$ ................................................2

$\beta=\frac{6\pi }{5}$

Put angle beta in equation 1 and find the value of R

R =6 cm

Height = $\frac{4R}{3}$

Thus volume = $\frac{1}{3}\pi6^{2}*8$

=301.44

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3 years ago

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Vsevolod [243]

Answer:

Step-by-step explanation:

3 0

2 years ago

Graph the line with slope -2/3<br> passing through the point (-4,5).

ELEN [110]

Answer:

graph this equation

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Step-by-step explanation:

y-5=-2/3(x--4)

y-5 = -2/3x - 8/3

y = -2/3x 7/3

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2 years ago

5 cups to 8 cups MATH HELP!

Nonamiya [84]

Answer:

If it's an addition problem then just add 3 cups

Step-by-step explanation:

There isn't too much context here buddy :p

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3 years ago

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Luda [366]

Answer:

Step-by-step explanation:

Use the property of equality :)

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3 years ago