Question

What is the largest possible area for a rectangle with a perimeter of 80 cm.
can you show your work.

Answer 1

I think 320

Answer 2

how did you get this? I have 7 more problems just like this to do?

Answer 3

I multiplied the 4 by 80

Answer 4

dah it has 4 sides. boy I must really be tired

Answer 5

Where did you come up with the 400

Answer 6

the answer is 400.

Answer 7

in the equation how did you come up with 400?

Answer 8

a square is the only rectangle with perimeter 80 that will give you a maximum area. so the the side of the square is 20 and the area is 20*20=400

Answer 9

ok that makes sense thanks