The answer is 304.8 millimetres
Perimeter Formula:
Area Formula:
Set perimeter Formula equal to b:
Plug formula for be we just made above into the area Formula:
Solve for L (you'll have to use quadratic formula) then plug that back into the area Equation and solve for b.
Here's a link to where the problem has been explained before (they go into more detail than me).
https://brainly.ph/question/468631
lmk if you need any more help
The answer is 12.5 seconds.
48/5 = 120/x
x = 2.5
2.5 * 5 = 12.5
11. Similar 1/2
12. Similar 2
13. no
14. no
15. No, they are not congruent because rectangles do not have equal sides, so the length of one triangle could be longer than the other and the width ozone can be shorter than the other.
16. Yes
The surface is the sun of all the sides. With the information provide I can only work out the volume, which is 420cm^3