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3 years ago

How do you find surface area of a cylinder in simple words/terms?

Mathematics

2 answers:

ivolga24 [154]3 years ago

4 0

First you should know the value of the radius which based on the picture is 9 in, next step is multiply 9 two times itself, then after that multiply it with the equivalent of pi which is 3.14 once you get the answer multiply it once again with the height of the cylinder
The following information I've stated is derived from the formula

Pi (sorry I don't have the proper sign) multiplied to the radius then multiplied to the height of the cylinder

Once you've encounter a problem in which the radius isn't stated simple divide the diameter by two and you're good to go

Sorry if didn't explain it well

Vika [28.1K]3 years ago

3 0

Answer:

Step-by-step explanation:

Calculate the area of the base (which is a circle) by using the equation πr² where r is the radius of the circle. Then, multiply the area of the base by the height of the cylinder to find the volume.

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ANIMALS A chicken can run at a top speed of 9 miles per hour. Find the top speed of a chicken in miles per minute. Round to the

NISA [10]

1.You first have to determine the relationship and the current unit and the target unit which it will be converted into.... 
2.In this case, feet to meters and seconds to minutes 
3.Determine the conversion rate
4 The time which is 2 mi / hr x 1 hr / 60 min = 0.3 mi/min
And that's your answer :)

5 0

3 years ago

2x^2=9-3x Find the factors

d1i1m1o1n [39]

Answer:

x = -3, $\frac{3}{2}$

Step-by-step explanation:

The given quadratic equation is: $2x^2 = 9 - 3x$

This can be written as: $2x^2 + 3x - 9 = 0$

To solve a quadratic equation of the form $ax^2 + bx + c = 0$ we use the formula:

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

Here, a = 2; b = 3; c = - 9

Therefore, the roots of the equation are:

$x = \frac{- 3 \pm \sqrt{9 - 4(2)(-9)}}{2(2)}$

$\implies x = \frac{-3 \pm \sqrt{81}}{4}$

$\implies x = \frac{-3 \pm 9}{4}$

We get two values of 'x', viz.,

x = $\frac{-3 + 9}{4}$ and $\frac{- 3 - 9}{4}$

$\implies x = \frac{6}{4} \hspace{5mm} \& \hspace{5mm} \frac{-12}{4}$

⇒ x = -3, 3/2

Since the factors of the quadratic equation is asked, we write it as:

(x + 3)(x - $\frac{3}{2}$ ) = 0

because, if (x - a)(x - b) are the factors of a quadratic equation, then 'a' and 'b' are its roots.

Multiply (x + 3) and (x - $\frac{3}{2}$ to see that this indeed is the given quadratic equation.

5 0

3 years ago

What is the area of a piece of plywood that is 8 2/5 feet by 3 1/8 feet

lesya [120]

The answer would be 26.25

3 0

3 years ago

What is the slope of a line perpendicular to y = -7/4x?

dexar [7]

A line is perpendiculat to another which has a slope of m if the perpendicular line has a slope of -1/m.
That means that if the product of slopes of two lines is -1, the two lines are perpendicular.

Here, y1=-7/4x, or m=-7/4
The perpendicular should have a slope of -1/m=-1/(-7/4)=4/7

6 0

3 years ago

Plz help and explain

Westkost [7]

Answer: B

Step-by-step explanation:

In order to get the best representative sample, you should choose the widest range of students, which is from a random sample of all students.

(A) Choosing from only the 6th graders, eliminates the choices the other grade-level students would choose.

(C) Choosing only from students who participate in after-school activities, eliminates the choices the other students would choose.

(D) Chhosing only from students not participating in the fundraiser is silly since you want to know what the students participating in the fundraiser would choose.

The only possible option is B - students from all grades, regardless of whether or not they participate in after-school activities.

5 0

3 years ago