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Vikentia [17]
3 years ago
5

A circle is centered on point B. Points A, C and D lie on it's circumference.

Mathematics
2 answers:
kvasek [131]3 years ago
8 0

Answer:

20

Step-by-step explanation:

i just did this one

IrinaVladis [17]3 years ago
3 0

The measure of the angle ADC is 20°

<u>Explanation:</u>

Given:

∠ABC = 40°

∠ADC = ?

We know:

Angle subtended at the center is twice the angle subtended at the circumference.

Thus,

∠ABC = 2 x ∠ADC

On substituting the value we get:

40° = 2 X ∠ADC

∠ADC = 20°

Therefore, the measure of the angle ADC is 20°

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evablogger [386]

The water in the cylinder will be 1179π in³. Thus, 2nd answer choice is correct.

<h3>What is the volume of a right circular cylinder?</h3>

Suppose that the radius of the considered right circular cylinder be 'r' units.

And let its height be 'h' units.

Then, its volume is given as:

V = \pi r^2 h \: \rm unit^3

A cylinder has an 18-inch diameter and is 15 inches tall. It is filled to the top with water.

A 6-inch-diameter ball is placed within the cylinder, and then the cylinder is filled with water.

We have to find the volume of the empty cylinder and then the volume of the ball.

Subtract the latter from the former.

The volume of the cylinder = πr^2h.  

= π(9 in)²(15 in)

= 1215π in³

Volume of the ball =  (4/3)π(3 in)³

                                = 36π in³

Subtracting

= 1215π in³ - 36π in³

= 1179π in³  

Thus, 2nd answer choice is correct.

Learn more about the volume of cylinder here:

brainly.com/question/12763699

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7 0
2 years ago
PLZ HELP. Which is the better buy? $40 for three digital movies
swat32

Answer:

the unit rate for the $100 option is 12.50

Step-by-step explanation:

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4 0
3 years ago
Find the intercepts to graph the line. <br> 4x−y=−4
Murljashka [212]

Answer:

X intercept is -1

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Step-by-step explanation:

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7 0
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Sheila had 8 yards of fabric.she used 2/3 of the fabric on a project. How many yards does she have left?
Inessa [10]

Answer:

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5 0
3 years ago
Anyone i need help with this
DIA [1.3K]

Answer:

Step-by-step explanation:

a1=90-a2

a1=90-30=60

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a2=30

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a2+a3+70=180

a3+30+70=180

a3=100=180

a3=80

4 0
3 years ago
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