Question

If a circle is enlarged so that it has a new area that is 25 times the original, what factor were the dimensions changed by?

5
25
625
1/5

Answer 1

Any ideas?

Answer 2

nope

Answer 3

Can you recall the formula for the area of a circle?

Answer 4

π × r2

Answer 5

Excellent :)

Answer 6

Please write it as a formula with an equals sign.

Answer 7

formula: An equation that states a rule about a relationship.

Answer 8

help me please skullpatrol

Answer 9

Ok, you will be next @bigpapa021201

Answer 10

@parisgirl1515 Are you still there?

Answer 11

yes

Answer 12

Please state the equation :)

Answer 13

is it 625

Answer 14

Nope.

Answer 15

5

Answer 16

$$\Huge \text{Area of a circle}= \pi r^2$$

Answer 17

You are right!

Answer 18

use unit analysis
length=5m, 25m, 625m, or 1/5m
area=25m^2
how do you get from meters to meters^2?
take the square