Question

Geometry question

Answer 1

You can find the length of the string using:

\[a^2=b^2+c^2\]

In this case, the hypotenuse (a) is the unknown in the equation, after that, you can work out how much string she pulls in, and the hyptenuse will reduce by that amount.

After that, you can work out how far the string is away from her, by using the hypotenuse and the height of her rod.

Answer 2

Using the same equation.

Answer 3

\(a=3\)

Answer 4

Yes.

Answer 5

It would be a good idea to convert all your metres to centremetres.

1m=100cm

Answer 6

\(a=300\quad cm\)

Answer 7

Yes, now the string reduces in length by 5cm per a second for 12 seconds, for a total of 60cm

Now a=300-60cm -> 240cm

Now recalculate the unknown length.

Answer 8

i didnt get it

Answer 9

@amistre64

Answer 10

@phi

Answer 11

how far did you get ?

Answer 12

i got \(a=300 ~~cm\)

Answer 13

ok, now they want the horizontal distance after 12 seconds. She reels in 5 cm/sec * 12 sec = 60 cm

Answer 14

ok what should i do next

Answer 15

I guess the "new hypotenuse" is 300 -60 = 240
draw in the new hypotenuse. can you do that ?

Answer 16

I'm thinking it looks like this:

Answer 17

ok, wht should i do next

Answer 18

one reason people are forced to study math is it makes them have to think.
So you have to try to think.

Here is the whole picture