+0  
 
0
42
1
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A tennis ball dipped in red paint rolls around on the coordinate plane, so that it is at

(x,y) = (t,2t)
at time t, where 0 <= t <= 4. Find the length of the paint trail left by the tennis ball.

 Jan 21, 2021
 #1
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0

At t= 0 it is at    0,0

at t= 4 it is at    4,8

 

use distance formula or pytheg theorem to find d

 

d2 = 42   + 82        ........finish.....

 Jan 21, 2021

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