1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vanyuwa [196]
3 years ago
5

Work out the surface area of a sphere please help if u get it correct i’ll give h brainlest

Mathematics
1 answer:
Bingel [31]3 years ago
5 0

Answer:

Surface area of sphere = 4πr²

r = radius

and radius = diameter/2

radius = 13/2

= 6.5cm

Surface area = 4 × π × 6.5

= 26 × π

= 81.68

= 81.7cm²

Hope this helps.

You might be interested in
Which of the options below show two numbers that are opposites? Select all that apply.
marshall27 [118]

Answer:

A,D and E are the answers.

mark brainliest

3 0
3 years ago
Read 2 more answers
Find the missing character (?)
4vir4ik [10]
The answer is 7, your welcome :).
6 0
4 years ago
Kal is making 3 batches of cookies. Each batch calls for 3/4 cups of sugar. How much sugar will Kal use for all 3 batches?
balu736 [363]

Answer:

2 1/4 cups of sugar

Step-by-step explanation:

You could change 3/4 to a decimal which is .75

Then multiply that by 3

The result was 2.25, so you would convert that into a fraction which would be 2 1/4

8 0
3 years ago
A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 220 feet of f
MrRa [10]

Answer:

6050 square feet

Step-by-step explanation:

Based on the diagram attached, the area which the available fencing can enclose will measure X x Y feet. As the total length of fencing available is 220 feet, the fenced perimeter must equal 220 feet

Y + 2X = 220

Y = 220 - 2X

Area of a rectangle is determined by multiplying the length of perpendicular sides:

Area = X*Y

Area = X(220 - 2X)

Area = 220X - 2X^{2}

The derivative of an equation determines the slope at any given point of that equation. At the maximum or minimum point of the equation, the slope will be zero. Therefore, differentiating the equation for area and equating it to zero will give the value of X where the area is maximum.

A simple variable can be differentiated using below concept:

f(a) = a^{b}

f'(a) = ba^{b-1}

Using the above concepts to differentiate Area and calculate X will give:

Area = 220X - 2X^{2}

Area' = 220 - 4X = 0

X = 55

Calculating Y:

Y = 220 - 2X

Y = 220 - 2(55)

Y = 110

Calculating Area:

Area = X*Y

Area = 55*110

Area = 6050\sqfeet

8 0
3 years ago
10n -11 =3 + 4n + 6n​
MrRissso [65]

Answer:

10n -11 =3 + 4n + 6n​

10n - 10n -11 =3-3 + 4n + 6n​

-11 - 3 = -10n + 4n + 6n

-14= -10n + 10n

-14 = n

Step-by-step explanation:

10n -11 =3 + 4n + 6n​

10n - 10n -11 =3-3 + 4n + 6n​

-11 - 3 = -10n + 4n + 6n

-14= -10n + 10n

-14 = n

3 0
3 years ago
Other questions:
  • A long distance telephone company advertised the rates of 5 minutes for 85¢ and 10 minutes for $1.10.
    10·1 answer
  • Ms.schriefer's tire popped and she use $130 from her savings to have it repaired. After that she had $564 left in saving . about
    9·2 answers
  • -17 times a number -29 is equal to -32 less than a number
    11·1 answer
  • What is the simplified form of the quantity 9 x squared minus 25 over the quantity 3 x plus 5?
    6·2 answers
  • What is a squar plus b squiar
    11·1 answer
  • Can anyone help me with this?
    11·1 answer
  • Find the slope for (-4,-2)(-3,-6)
    7·2 answers
  • The LA dodgers hit the most home runs in 2014. The number of Home runs accounted for 6% of the entire major league baseball home
    13·1 answer
  • Need help dont know which one to chose
    13·1 answer
  • Complete each congruence statement by naming the corresponding angle or side.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!