Answer:
42.0×10² second²
Explanation:
Here, time is given in milisecond
(64800 ms)²
= 4199040000 ms²
The SI unit is seconds
1 second = 1000 milisecond
[tex]1\ milisecond=\frac{1}{1000}\ second[/tex]
[tex]\\\Rightarrow 1\ milisecond^2=\left(\frac{1}{1000}\right)^2\ second^2[/tex]
[tex]4199040000\ ms^2=4199040000\times \left(\frac{1}{1000}\right)^2\ second^2=4199.04\ second^2[/tex]
42.0×10² second²
