Mathematics College

Find the surface area of a cone that has a slant height of 6 inches and a base with a diameter of 3 inches.

Answers

Answer 1

Answer:

Step-by-step explanation:

radius r = 1.5 in

slant height ℓ = 6 in

lateral area LA = πrℓ

= π(1.5)(1.5)

= 2.25π

≅ 7.07 in²

base area BA = πr²

= π1.5²

≅ 7.07 in²

surface area SA = LA + BA

= 7.07 + 7.07

≅ 14.14 in²

Related Questions

Two forces of 90 newtons and 58 newtons act simultaneously on an object. The angle between the two forces is 57°. Find the magnitude of the resultant, to the nearest 10th of a newton.

Answers

Answer:

131.0 N

Step-by-step explanation:

Let the 90 N force is acting a horizontal force on the object

Horizontal force = 90 + 58sin33

Vertical force = 58cos33

∴The resultant force = √(90 + 58sin33)² + (58cos33)²

= 131.0 N

What is the product?

One-third times 33.99

Answers

Answer:

11.33

Step-by-step explanation:

um I'm not that good at explaining but...

33/3=11

99/3=33

put it together

11.33

Geometry!! Will give brainliest

Answers

it's the second one.

find the area of the right triangle.

Answers

Answer:

16 units²

Step-by-step explanation:

1/2x4x8=16

please help NO LINKS I WILL REPORT YOU ( i will also mark brainliest)

Answers

Answer:

6.96 is the area of this triangle! So, option A is correct.

Hope this helps and please mark brainliest!

I WILL GIVE BRAINERLEST ABD LIKE AND 5 STARS IF YOU ANSWER

How many people n would be seated in
each section if there were 27 total
people in the gym?

Answers

Answer:

IT SAYS IT 27 PEOPLE WOULD BE SEATED

Step-by-step explanation:

Item 16
Find the perimeter of the figure to the nearest hundredth. due today

Answers

Answer:

42.84 cm

Step-by-step explanation:

1) Find the perimeter of the top trapezoid. (In cm) 6 + 8 + 12 + 10 = 36 cm

2) Find the circumference of the semicircle with the formula 0.5(pie times D) where D is the diameter. Another formula is 0.5(pie times 2r) where r is the radius. Approximate pie to 3.14 so we should get 0.5 * 3.14 * 12 = 18.84 cm

3) We do not need the length of the base of the trapezoid so we take 36 + 18.84 - 12 = 42.84 cm

Use the slope formula to find the slope of the line through the points (2,1) and (8,7)

Answers

Answer:

6/6

Step-by-step explanation:

Answer: slope = (6,6)

Step-by-step explanation:

PLEASE HELP ME ITS URGENT ❗❗❗❗❗❗❗❗❗❗❗

Answers

Answer: W is your answer :)

Step-by-step explanation:

let: f(x)=x+1 and g(x)=x^2-2

find: f(x)•g(x)

Answers

Answer: x3+x2−2x−2

Step-by-step explanation: Use the given functions to set up and simplify f ( x ) ⋅ ( g ( x ) ) .

Brainliest or a thank you please! have a great day/night

WILL GIVE BRAINLIEST

Answers

Answer:

Step-by-step explanation:

It's not A and B because an exponent to the negative number leads to the fraction.

e.g. 10^-a = 1/(10^a)

It's not D because 5,030,000 rounds to 5,000,000 and not 6,000,000.

ill mark brainlist plss help

Answers

Step-by-step explanation:

Perimeter of rectangle = 2(l+b)

= 2(97+17)

= 2(114)

= 228cm

Answer:

P = 228 inches

Step-by-step explanation:

P = 2(l + w)

l = 97 inches

w = 17 inches

P = 2 (97 + 17)

P = 2 x 114

P = 228

The age of a first-grader on September 1 at Garden Elementary School has the following distribution: f (x )space equals space 1 comma space space 5.8 less or equal than x less or equal than 6.8 We randomly select one first-grader from the class. Find the probability that she is over 6.5 years old. Round to one decimal place.

Answers

Answer:

lol

Step-by-step explanation:

lol

help me pls. answer correct

Answers

Answer:

1st answer is

[tex](x.y) = ( \frac{38}{5} . \frac{2}{5} ) \\ [/tex]

2nd answer is (x, y) =(36, 45)

Whoever responds first will get marked Best! No links or else I will ban you!Mary is using a triangular piece of cloth to make a scarl for her teddy bear. The base of the scarf is 18 cm and height is 12 cm. How many square
centimeters of cloth does Mary have?

Answers

Answer:

108 sq cm

Step-by-step explanation:

18x12 = 216

216/2 = 108

What’s the slope of the line I forgot how to do it when it comes to negative ones :((!!

Answers

(4,-2) because your going up 4 and when you go up it’s positive and than left two it’s negative because when you go left it’s always negative (:

Help nnananannanannanananannannanansnnsnsnnsnsnsnsnnsns

Answers

Answer:

Step-by-step explanation:

The two x's end up being -4 and 6, so added together that's 2

Someone please explain how you got the answer please and thank you

Answers

Answer:

3 texts by madelyn, there were 2 texts from aubrey

Step-by-step explanation:

the ratio of maddie to aubrey was 18:12 which is 3:2

so 3 by maddie = 2 by aubrey

i used maddie because its shorter

Answer:

6 + 6 is 12 and 12 + 6 is 18 so i think its for every 6 text sent and then 6 again (6 in both boxes)

Step-by-step explanation:

adore your sasha pfp

POSSIBLE POINTS: 15
A can of soda contains 0.355 liters of soda. How many milliliters of soda are in one can?

Answers

There’s 355 milliliters of soda in one can

2
A person that is 6 feet tall casts a shadow that is 2.5 feet long. At the same time, a 120 foot tall building casts a shadow. What is the length of the shadow?
feet

Answers

Answer:

The building's shadow is 50 ft

Step-by-step explanation:

[tex]\frac{6}{2.5} =\frac{120}{x} \\\\6x=300\\x=50[/tex]

Mrs.Ziegler will use 1/5 of the 4gallons of milk she has to make chocolate pudding. How much milk will Mrs.Zirkle use to make chocolate pudding?

Answers

1/5=20%
4 gallons. 100%
x gallons. 20%
x=4•20/100
x=80/100
x=8/10
x=4/5
Mrs. Zirkle will use 4/5 gallons of milk.
I am not 100% sure.

6/15=3/x
HELPP PLEASE

Answers

Answer:

15/2 or 7.5 :)

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]\frac{6}{15} = \frac{3}{x}[/tex]

simply cross multiply

[tex]6x = 45[/tex]

divide both sides by 6

[tex]\frac{6x}{6} = \frac{45}{6}[/tex]

hence x will be equal to [tex]7.5[/tex]

Is it required to for it to be in decimals?

the perimeter of a rectangle is 15x+17y. if the length is 7/2x+7y, then find the width of the rectangle
A.) 4x+3/2y
B.) 8x+3y
C.) 8x+10y
D.) 4x+3y

Answers

Answer:

Step-by-step explanation:

Length : [tex]\frac{7x}{2} + 7y[/tex]

Perimeter: [tex]15x + 17y[/tex]

Perimeter = 2(Length + Width)

15x + 17y = 2( [tex]\frac{7x}{2} + 7y[/tex] + Width)

15x + 17y = 7x + 14y + 2(Width)

15x + 17y -7x -14y = 2(Width)

8x + 3y = 2(Width)

Width = [tex]\frac{8x + 3y}{2}[/tex]

Width = 4x + 3y/2

Which expression is not equivalent to the other three? A: 2x + 2 + 2x + 3x - 8 B: 4 + 7x - 2 C: -2 + 5x + 2x - 4 D: 8x - x - 6

Answers

Answer: B

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let's look at A.

A simplified = 7x - 6

Let's look at B

B simplified = 2 + 7x

Let's look at C

C simplified = -6 + 7x OR 7x - 6

Let's look at D, lastly.

D simplified = 7x - 6

In conclusion, we can see that 7x - 6 is the answer we need to arrive at to have equivalent expressions. Only B does not have that answer, so B is the answer.

Hope that helps!

Easy Points! whats 2+2?

Answers

Answer:

Step-by-step explanation:

The expression (x^3) (x12) is equivalent to x^n. What is the value of n?

3 and n are exponents

Answers

Answer:

Step-by-step explanation:

(x^3) (12x)

(x^4)(12)

12x^4

We can really find the exponent without knowing what x is equal to but I hope this helps

What is the area of this figure?

Answers

Answer:

area = 400 in²

Step-by-step explanation:

parallelogram area = 20 x 16 = 320

triangle area = 1/2(20)(8) = 80

320 + 80 = 400 in²

A CD player is advertised at a price of $1200. It could be bought cash or by hire purchase. The table below shows the terms of payment.

Answers

Cash:1140
Option 1:1344
Option 2:1320

Evaluate 4x – 3 for x = -2.

Answers

Answer: -11

Step-by-step explanation:

4(-2)-3

-8-3

=-11

It’s -11 I’m not sure but hope it help

Can you help me please?!

Answers

30.) d=26

Take the equation

2 x (7 + d)

Now plugin 6 for d

2 x (7 + 6)

2 x (13)

31.) c

Take the equation

16b+8/2

Now plugin 4 for b

16(4)+8/2

64+8/2

64+4

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