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
zepelin [54]
3 years ago
14

If the radius of a circle is increased by 100%, then the area is increased by:

Mathematics
1 answer:
shtirl [24]3 years ago
5 0
A_1=\pi r^2\\\\R=2r\ then\ A_2=\pi R^2\to A_2=\pi(2r)^2=4\pi r^2\\\\A_2-A_1=4\pi r^2-\pi r^2=3\pi r^2=3A_1\\\\3=300\%\\\\Answer:(C).
You might be interested in
Evita lives 0.85 miles from her school. Write this distance as a fraction in simplest form
Westkost [7]
0.85 written as a fraction in simplest form is 17/20
7 0
3 years ago
Please help please please
hammer [34]

Answer:

A. The lines stay parallel

Step-by-step explanation:

Rigid transformations do not change angle or line relationships. When the parallel lines are rotated they stay parallel. Reflecting them will keep them parallel. If this were not true, then figured with parallel lines like rectangles and squares would change shape when reflected.

4 0
3 years ago
Find the length of the hypotenuse in the right triangle below. 39in, 52in
Bingel [31]
If two sides of a right triangle are x and y, the hypotenuse, h is:

h^2=x^2+y^2, in this case x and y are 39 and 52 respectively so:

h^2=39^2+52^2

h^2=1521+2704

h^2=4225

h=√4225

h=65 in

So the hypotenuse is 65 inches.
3 0
3 years ago
Read 2 more answers
The area of a trapezium is 360 cm² and its height is 18 cm. If one of the parallel sides is longer than the other by 6 cm, then
Leokris [45]

Answer:

The two parallel sides a and b are 17 cm and 23 cm respectively

Step-by-step explanation:

Area of a trapezium = {(a+b)/2} h

Where

h = height = 18 cm

a = parallel side 1 = x

b = parallel side 2 = x + 6

Area of a trapezium = {(a+b)/2} h

360 = {(x + x + 6) / 2} 18

360 = { (2x + 6) / 2} 18

360 = (2x + 6) 9

360 = 18x + 54

Subtract 54 from both sides

360 - 54 = 18x

306 = 18x

Divide both sides by 18

x = 306 / 18

= 17

x = 17 cm

a = parallel side 1 = x

x = 17 cm

b = parallel side 2 = x + 6

x + 6

= 17 + 6

= 23 cm

8 0
3 years ago
PLEASE HELP 30 POINTS
Gelneren [198K]

Answer:

3 + 1(3) +3 (the dollar amounts)

3+3+3

9

0.5 + 0.1 +0.1 +0.1 +0.5 (the cents)

1.3

9 +1.3 = 10.30 worth of groceries using front end estimation

3 0
3 years ago
Other questions:
  • Jane decided she would spend the
    7·1 answer
  • The farmer planted an equal number of each type of tree.oak trees were one of the 3 types of trees planted.what was the total nu
    13·2 answers
  • What is the answer ?
    13·2 answers
  • Solve this and show your work please
    13·1 answer
  • James uses the Distributive Property to find how many cans of paint are in the art supply closet. There are 5 boxes in the close
    12·1 answer
  • 1 point
    5·2 answers
  • ● For the polygon you are assigned, assume the radius is 1 unit . Round all answers to the nearest hundredth , if necessary.
    6·1 answer
  • Someone please help me
    7·1 answer
  • What fraction is equivalent to 3/9​
    13·2 answers
  • Find the length of the hypotenuse
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!