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
alexandr402 [8]
3 years ago
14

A sphere has diameter 28 cm. If the diameter is divided by 2, what is the effect on the surface area?

Mathematics
1 answer:
spayn [35]3 years ago
4 0

Answer:

The surface area is divided by 4.

Step-by-step explanation:

Surface area of a sphere is 4πr².

When the diameter is 28 the radius is 14. So: 4π(14)² = 784π

If you cut the diameter in half you get 14. The radius is now 7.

4π(7)² = 196π.

784/4 = 196 so divided by 4.

You might be interested in
If f(x)=4x+2, find f(-3)
almond37 [142]

Answer:

f(x)=-10

Step-by-step explanation:

when you have f of x...any x gets the filled in by the number that is next to f

so f(x)=4x+2

f(x)=4*-3+2

f(x)=-10

7 0
3 years ago
Please, help worth a lot of points.
sleet_krkn [62]
1. Multiply: (3x+1)(x+2) Answer:3x^2+7x+2
2.Remember to combine all like terms, and FOIL to check if you had factored a trinomial correctly.

6 0
4 years ago
Reiko started a business selling home medical supplies. She spent $6500 to obtain her merchandise, and it costs her $550 per wee
polet [3.4K]

if she spent 6500 at the beginning and it cost 550 per week, 900-550=350 gain per week... 350 times 19 is 6650 so it takes 19 weeks for them to make a gain

5 0
3 years ago
Which number represents "nine and eighty-one thousandths?"
Lemur [1.5K]

Answer:

9.081

Step-by-step explanation:

Chow,...!

3 0
3 years ago
Read 2 more answers
write an equation in slope-intercept form for a line that goes through (9,-2) and is parallel to y=7x+2​
lozanna [386]

Answer:

y=7x-65

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • X to the power of negative 2 equals 25
    7·1 answer
  • The state reimburses Mike $.195 cents per mile. Mike submitted his travel log for a total of 480.91 miles. What reimbursement ca
    7·1 answer
  • The perimeter of an equilateral triangle is 12 feet find the area of the triangle
    14·2 answers
  • Name a fourth point in plane TUW.
    13·1 answer
  • if i had 2 cookies and one of my friends asked for 1, then another friend asked for 1, then another friend asked for one. what d
    11·2 answers
  • There is a cube that is 1 unit long, 1 unit wide,
    7·2 answers
  • She has 7 initiatives and wants to put 2 stickers on each. She has 10 stickers. How many more stickers does she need?
    7·1 answer
  • Simplify: √18 - √24 + √54
    8·2 answers
  • A local hamburger shop sold a combined total of 575 hamburgers and cheeseburgers on Sunday. There were 75 fewer cheeseburgers so
    12·1 answer
  • Find the median and first quartile, Q1,
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!