A cone has a diameter of 8 in and a height of 8 in. what is the volume when using 3.14 as $\pi$

Answers

Answer 1

Answer: Volume of a cone=(1/3)πr²h

Data:
π=3.14
radius=diameter / 2=8 in /2=4 in
heitht=8 in.

Volume of this cone=(1/3) *3.14 * (4 in)² * 8 in=133.97 in³,

answer: 133.97 in³

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Four expressions are shown:5(4x + 3)
20x + 15
5(5x + 2)
25x + 10
Which two expressions are equivalent to 5(4x + 2 + x)?
C and D
A and C
A and B
A and D

Answers

C and D is the correct answer.

C and D are equivalent

My last question! help me. ASAP

Answers

Answer: $119.43\ cm^2$

Step-by-step explanation:

The area of the rectangle can be calculated with the following formula:

$A_r=lw$

Where "l" is the length and "w" is the width.

In this case:

$l=12\ cm\nw=11\ cm$

Then, substituting values into the formula, you get that the area of the rectangle shown in the figure is:

$A_r=(12\ cm)(11\ cm)\n\nA_r=132\ cm^2$

The formula that is used to find the area of a circle is:

$A_c=\pi r^2$

Where "r" is the radius of the circle.

In this case you know that:

$r=2\ cm$

Then, the area of the given circle is:

$A_c=\pi (2\ cm)^2\n\nA_c=12.566\ cm^2$

Subtract both areas in order to find the area of the shaded region. Rounded to the nearest hundredth, this is:

$A_s=132\ cm^2-12.566\ cm^2\n\nA_s=119.43\ cm^2$

4/9x + 1/5x=58 i need help solving this equation

Answers

So first let’s combine like terms and add 4/9x and 1/5x together to get 29/45x =58. Next, multiply 58 by 45/29 to isolate x, so x=90

How many corners are in a rectangle and how many flat faces

Answers

Rectangle is a polygon (A close plane figure which has 3 or more sides)
Rectangle is a parallelogram (Opp Sides are parallel and congruent)
Rectangle has 4 right (90 degrees) angles, 4 sides and vertices (Corners).
Just saying a square is a type of rectangle and rhombus (4 Congruent sides)

Search about Quadrilaterals. Glad I could help!

I think you mean rectangular prism
Anyways a rectangular prism has 8 vertices (what you call corners) and also 6 faces.

I need help on a math problem . Thanks A BILLION BRAINLY STUDENTS !!!!!!!!!!!!!!!!!!!!!!!!!1) evaluate the expression 5x+6 for x =-2(whole #) 1/5
KEY # = number
GRADE= 7th grade
SUBJECT = math

Answers

$5\cdot\left(-2(1)/(5)\right)+6=\n5\cdot(-2)+5\cdot\left(-(1)/(5)\right)+6=\n-10-1+6=\n-5$

What do you multiply to get 8 and add to get 4

Answers

Hi Mitchell

-1*8+12

(-1*8)+12

-8+12=4

I hope that's help :0

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