Word problems please help?

Question

the width of a rectangle is fixed at 15cm. what lenghts will make the perimeter greater then 94cm?

Answer 1

2l+2w = perimeter

2l + 30 > 94

2l > 64

l > 32

Answer 2

Any length >32. lol :D hope I'm right...

You know that 15+15=30 for the combined widths, and 94-30=64, and divide that by 2 to get your 2 lengths. So it has to be greater than those for the perimeter to be greater than 94. That's my reasoning.

Answer 3

greater then 32 cm

Answer 4

length > (94/2 -- 15) cm = 32 cm will make perimeter greater than 94 cm

Answer 5

perimeter= 2*length+ 2* width =2*length+30

P=2L+30

P>94

2L+30>94

2L>64

L>32