Please give me a step by step process of how to solve this... Identify m∠CFB.

A cylinder has a volume of 245 cubic units and a height of 5 units. The diameter of the cylinder is

Vikki [24]

Answer:

The diameter is twice that, or approx. 7.90 units.

Step-by-step explanation:

the equation for the volume of a cylinder of radius r and height h is

V = πr²h. Here we need to calculate the diameter after having found the radius. Solving V = πr²h for r², we get:

V

r² = -----------

πh

Substituting the given values, we obtain for r² the following:

145 units³

r² = ------------------------ = 15.6 units²

3.14159(5 units)

Taking the square root of both sides, we get:

r = √15.60, or approx. 3.95 units.

The diameter is twice that, or approx. 7.90 units.

3 0

4 years ago

Read 2 more answers

Morgan had 1/2 a box of candy left after the movie she ate 1/2 of that. On the way home and still had 8 pieces left. She give on

STatiana [176]

Answer:

16

Have a good day <3

3 0

3 years ago

The mayor of a town places a map of the town on a coordinate grid with Town Hall at the point (0,0) and with each unit represent

Alexxandr [17]

The town will spend $202.5 on laying the pipes.

Step-by-step explanation:

Given points are;

(-2,-4) and (6,-5)

$x_1=-2, \ \ \ y_1=-4\\x_2=6,\ \ \ \ y_2=-5\\$

Distance of two points is;

$Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\Distance=\sqrt{(6-(-2))^2+(-5-(-4))^2} \\Disatnce=\sqrt{(6+2)^2+(-5+4)^2} \\Distance=\sqrt{(8)^2+(-1)^2}\\Distance=\sqrt{64+1} \\Distance=\sqrt{65} \\Distance= 8.1 \units$

As one unit represent a mile, therefore,

Distance = 8.1 miles

Cost of laying 1 mile = $25

Cost of laying 8.1 miles = 8.1*25 = $202.5

The town will spend $202.5 on laying the pipes.

Keywords: distance, points

Learn more about distance at:

#LearnwithBrainly

7 0

3 years ago

WHAT IS A 2ND DEGREE POLYNOMIAL FUNCTION WHOSE GRAPH HAS ONLY POSITIVE Y-VALUES

elena55 [62]

An example of quadratic equation with this behavior is:

$y = x^2 + x + 20$

Which is sketched at the end of this answer.

A quadratic equation has the format:

$y = ax^2 + bx + c$

It's roots are given by:

$\frac{-b \pm \sqrt{\Delta}}{2}$

The number of roots depends on the discriminant $\Delta = b^2 - 4ac$ , that is:

If $\Delta > 0$ , it has two different real roots.
If $\Delta = 0$ , it has one real root.
If $\Delta < 0$ , it has no real roots.

In this problem, it will have only positive y-values if: $\Delta < 0$ and $c > 0$

Thus, an example is:

$y = x^2 + x + 20$

Which is sketched below.

A similar problem is given at brainly.com/question/19776811

6 0

3 years ago

You roll a number cube and then spin a spinner. The events are independent. True False

yKpoI14uk [10]

Answer:

True. Spinning the spinner wont impact ehat you roll on the dice

7 0

3 years ago

Please give me a step by step process of how to solve this...Identify m∠CFB.