2 years ago

If the radius of a circle is doubled, how does the area of the circle change?

Mathematics

1 answer:

makkiz [27]2 years ago

5 0

Answer:

Quadruple the size

Step-by-step explanation:

Explanation:

When you enlarge a linear measurement by a scale factor a the area changes by a scale factor a2

So when you double the radius. scale factor 2, the area is increased by a scale factor:

22=4

So the area is quadrupled in this case.

You might be interested in

27 The data in the table below shows a linear relationship.

KatRina [158]

Answer:

y-intercept is at (0,3)

Step-by-step explanation:

3 0

2 years ago

The distance from the library to the park is your point 7 km how many meters is this

sattari [20]

Answer:

7000 meters

Step-by-step explanation:

We know that 1 km = 1000 meters

7 km * 1000m/km = 7000 meters

5 0

3 years ago

Hello guys I really need help is anyone available please and ty

Diano4ka-milaya [45]

Answer:

6x5x5

Step-by-step explanation:

the square is a 5x5

and there are 6 of those squares

so it is 6x5x5

4 0

3 years ago

Read 2 more answers

What's the answer to the math problem 8r+4=10+2r

mart [117]

In order to solve for r you have to place all the number in one side. then isolate r ...... r=1

6 0

3 years ago

What is the equation (simplified) the inverse of y=2x^2?

Yuki888 [10]

$2x^2=y\ \ \ |divide\ both\ sides\ by\ 2\\\\x^2=\dfrac{y}{2}\\\\\boxed{x=\sqrt{\frac{y}{2}}}\\\\x=\dfrac{\sqrt{y}}{\sqrt2}=\dfrac{\sqrt{y}\cdot\sqrt2}{\sqrt2\cdot\sqrt2}\to\boxed{x=\dfrac{\sqrt{2y}}{2}}\\\\\\\boxed{f(x)=2x^2\to f^{-1}(x)=\dfrac{\sqrt{2y}}{2}}$

3 0

3 years ago